Open Bug 1549901 Opened 6 years ago Updated 2 years ago

Lag/stutter with 4K monitor

Categories

(Core :: Graphics, defect, P3)

Product:
Core
Component:
Graphics
Version:
66 Branch
Type:
defect

Tracking

()

Status:
UNCONFIRMED

People

(Reporter: sunnyt7, Unassigned)

References

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

Steps to reproduce:

I recently got an LG 27" 4K monitor, but it seems like Firefox's smoothness has taken quite a hit. Most the time when I initially start scrolling there is jitter, as well as on any web page with a few animations or images.

I have a 2018 Huawei Matebook X Pro i7 with an MX150, using a high speed HDMI cable to a USB-C adapter that supports 60Hz.

I tried setting gfx.webrender.all to true, but it didn't help much.

Actual results:

I'm also now more confident that it is a Firefox issue. I have my resolution set to 3840x2160, 60Hz. Initially I had my Windows Scaling set to 175%. I just changed that to 150%, and Firefox is almost unusable now. There is extreme lag scrolling any page. Neither Chrome nor Edge have the same issue.

Expected results:

I don't use the other browsers much, but it doesn't seem like I have these issues with Chrome or Edge. The jitter also appears to improve if I resize the window to something a bit smaller.

Application Basics

Name: Firefox
Version: 66.0.5
Build ID: 20190507012018
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0
OS: Windows_NT 10.0
Multiprocess Windows: 1/1 Enabled by default
Web Content Processes: 4/8
Enterprise Policies: Active
Google Location Service Key: Found
Google Safebrowsing Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports Firefox Features

Name: Firefox Screenshots
Version: 35.0.0
ID: screenshots@mozilla.org

Name: Form Autofill
Version: 1.0
ID: formautofill@mozilla.org

Name: Web Compat
Version: 3.0.2
ID: webcompat@mozilla.org

Name: WebCompat Reporter
Version: 1.1.0
ID: webcompat-reporter@mozilla.org

Extensions

Name: Firefox Multi-Account Containers
Version: 6.1.0
Enabled: true
ID: @testpilot-containers

Name: Honey
Version: 11.1.0
Enabled: true
ID: jid1-93CWPmRbVPjRQA@jetpack

Name: LastPass: Free Password Manager
Version: 4.27.2.10
Enabled: true
ID: support@lastpass.com

Security Software

Type: Avast Antivirus

Type: Avast Antivirus

Type: Windows Firewall

Graphics

Features
Compositing: WebRender
asyncPanZoom: wheel input enabled; touch input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled
webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000d6e7) EGL_VERSION: 1.4 (ANGLE 2.1.0.eff6bfdb1db9) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_MOZ_create_context_provoking_vertex_dont_care EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Intel(R) UHD Graphics 620 Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.eff6bfdb1db9)
WebGL 1 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000d6e7) EGL_VERSION: 1.4 (ANGLE 2.1.0.eff6bfdb1db9) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_MOZ_create_context_provoking_vertex_dont_care EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context
WebGL 2 Driver Renderer: Google Inc. -- ANGLE (Intel(R) UHD Graphics 620 Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.eff6bfdb1db9)
WebGL 2 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Direct2D: true
Uses Tiling (Content): true
Off Main Thread Painting Enabled: true
Off Main Thread Painting Worker Count: 4
Target Frame Rate: 60
DirectWrite: true (10.0.17763.168)
GPU #1
Active: Yes
Description: Intel(R) UHD Graphics 620
Vendor ID: 0x8086
Device ID: 0x5917
Driver Version: 24.20.100.6286
Driver Date: 8-15-2018
Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
Subsys ID: 3e0419e5
RAM: Unknown
GPU #2
Active: No
Description: NVIDIA GeForce MX150
Vendor ID: 0x10de
Device ID: 0x1d12
Driver Version: 26.21.14.3039
Driver Date: 4-17-2019
Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvhwi.inf_amd64_2bf7a5f6a6e6ca0a\nvldumd.dll
Subsys ID: 3e0419e5
RAM: 2048
Diagnostics
AzureCanvasAccelerated: 0
AzureCanvasBackend: direct2d 1.1
AzureCanvasBackend (UI Process): skia
AzureContentBackend: skia
AzureContentBackend (UI Process): skia
AzureFallbackCanvasBackend (UI Process): cairo
Slow Frame #01: Frame 158(https://www.activecampaign.com/) CONTENT_FRAME_TIME 16390 - Transaction start 0.000000, main-thread time 162.003000, full paint time 198.150300, Skipped composites 0, Composite start 198.634700, Resource upload time 13.643900, GPU cache upload time 1.394500, Render time 39.605000, Composite time 82.333900
Slow Frame #02: Frame 2(chrome://gfxsanity/content/sanitytest.html) CONTENT_FRAME_TIME 3886 - Transaction start 10.957600, main-thread time 0.458000, full paint time 0.734500, Skipped composites 0, Composite start 402.367500, Resource upload time 0.000300, GPU cache upload time 0.036500, Render time 226.882200, Composite time 231.062000
Slow Frame #03: Frame 3(chrome://gfxsanity/content/sanitytest.html) CONTENT_FRAME_TIME 2986 - Transaction start 0.049700, main-thread time 0.135900, full paint time 0.680300, Skipped composites 0, Composite start 266.140900, Resource upload time 0.000300, GPU cache upload time 0.036500, Render time 226.882200, Composite time 231.062000
Slow Frame #04: Frame 209(https://www.activecampaign.com/) CONTENT_FRAME_TIME 1633 - Transaction start 8.897300, main-thread time 16.843300, full paint time 23.305300, Skipped composites 0, Composite start 34.305500, Resource upload time 3.483300, GPU cache upload time 0.155000, Render time 138.134500, Composite time 171.078100
Slow Frame #05: Frame 214(https://www.activecampaign.com/) CONTENT_FRAME_TIME 1442 - Transaction start 17.747800, main-thread time 9.936800, full paint time 22.339500, Skipped composites 0, Composite start 89.033100, Resource upload time 0.001400, GPU cache upload time 0.248200, Render time 140.707500, Composite time 143.284900
Slow Frame #06: Frame 9(about:home) CONTENT_FRAME_TIME 1402 - Transaction start 3.229200, main-thread time 3.668800, full paint time 5.156900, Skipped composites 0, Composite start 9.429800, Resource upload time 1.827500, GPU cache upload time 0.333600, Render time 189.502600, Composite time 214.708200
Slow Frame #07: Frame 2(about:home) CONTENT_FRAME_TIME 1316 - Transaction start 0.026700, main-thread time 2.982700, full paint time 3.418700, Skipped composites 0, Composite start 207.703100, Resource upload time 0.000400, GPU cache upload time 0.044600, Render time 1.768900, Composite time 2.127400
Slow Frame #08: Frame 212(https://www.activecampaign.com/) CONTENT_FRAME_TIME 1311 - Transaction start 0.000000, main-thread time 15.597800, full paint time 18.467800, Skipped composites 0, Composite start 24.408900, Resource upload time 1.259200, GPU cache upload time 0.390600, Render time 5.707900, Composite time 30.431300
Slow Frame #09: Frame 210(https://www.activecampaign.com/) CONTENT_FRAME_TIME 1274 - Transaction start 17.199600, main-thread time 9.872100, full paint time 13.471600, Skipped composites 0, Composite start 134.874900, Resource upload time 14.718200, GPU cache upload time 0.504800, Render time 51.565100, Composite time 60.720400
Slow Frame #10: Frame 159(https://www.activecampaign.com/) CONTENT_FRAME_TIME 1201 - Transaction start 66.542900, main-thread time 17.011700, full paint time 50.775900, Skipped composites 0, Composite start 143.340900, Resource upload time 0.551400, GPU cache upload time 0.384300, Render time 37.488100, Composite time 43.607000
GPUProcessPid: 17920
Decision Log
WEBRENDER:
opt-in by default: WebRender is an opt-in feature
available by user: Force enabled by pref
WEBRENDER_QUALIFIED:
blocked by env: Has battery

Media

Audio Backend: wasapi
Max Channels: 2
Preferred Sample Rate: 48000
Output Devices
Name: Group
S24D390 (Intel(R) Display Audio):
:
:
LG HDR 4K (Intel(R) Display Audio): HDAUDIO\FUNC_01&VEN_8086&DEV_280B&SUBSYS_80860101&REV_1000\4&2bdfe015&0&0201
Headphones (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
:
Speakers (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
Speakers (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
Internal AUX Jack (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
S24D390 (Intel(R) Display Audio): HDAUDIO\FUNC_01&VEN_8086&DEV_280B&SUBSYS_80860101&REV_1000\4&2bdfe015&0&0201
:
LG HDR 4K (Intel(R) Display Audio): HDAUDIO\FUNC_01&VEN_8086&DEV_280B&SUBSYS_80860101&REV_1000\4&2bdfe015&0&0201
:
Input Devices
Name: Group
Microphone (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
Microphone (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
:
Microphone (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
Microphone (HD Pro Webcam C920): USB\VID_046D&PID_082D&MI_02\7&b34cfd9&2&0002
Microphone Array (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
:
:
:
Stereo Mix (Realtek(R) Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0256&SUBSYS_19E53204&REV_1000\4&2bdfe015&0&0001
:
:

Important Modified Preferences

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 1048576
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.smart_size.first_run: false
browser.download.useDownloadDir: false
browser.sessionstore.upgradeBackup.latestBuildID: 20190507012018
browser.startup.homepage_override.buildID: 20190507012018
browser.startup.homepage_override.mstone: 66.0.5
browser.urlbar.placeholderName: Google
browser.urlbar.timesBeforeHidingSuggestionsHint: 0
dom.push.userAgentID: 4e1f6899a8694ce29e8395d9a92011f0
extensions.lastAppVersion: 66.0.5
gfx.crash-guard.status.wmfvpxvideo: 2
gfx.crash-guard.wmfvpxvideo.appVersion: 66.0.5
gfx.crash-guard.wmfvpxvideo.deviceID: 0x5917
gfx.crash-guard.wmfvpxvideo.driverVersion: 24.20.100.6286
gfx.webrender.all: true
layers.mlgpu.sanity-test-failed: false
media.benchmark.vp9.fps: 100
media.benchmark.vp9.versioncheck: 5
media.gmp-gmpopenh264.abi: x86_64-msvc-x64
media.gmp-gmpopenh264.lastUpdate: 1556832445
media.gmp-gmpopenh264.version: 1.7.1
media.gmp-manager.buildID: 20190504212614
media.gmp-manager.lastCheck: 1557260518
media.gmp-widevinecdm.abi: x86_64-msvc-x64
media.gmp-widevinecdm.lastUpdate: 1556832446
media.gmp-widevinecdm.version: 4.10.1146.0
media.gmp.storage.version.observed: 1
media.hardware-video-decoding.failed: false
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1556902297
places.history.expiration.transient_current_max_pages: 133069
plugin.disable_full_page_plugin_for_types: application/pdf
privacy.sanitize.pending: [{"id":"newtab-container","itemsToClear":[],"options":{}}]
privacy.userContext.enabled: true
privacy.userContext.extension: @testpilot-containers
privacy.userContext.longPressBehavior: 2
privacy.userContext.ui.enabled: true
security.sandbox.content.tempDirSuffix: {27d3dc2b-fc23-438c-a50a-f7056ddd4cd6}
security.sandbox.plugin.tempDirSuffix: {c1722663-db96-4713-b88a-5e9051297345}
services.sync.declinedEngines: addons,passwords
services.sync.engine.addons: false
services.sync.engine.passwords: false
services.sync.engine.prefs: false
services.sync.engine.prefs.modified: false
services.sync.engine.tabs: false
services.sync.lastPing: 1557211265
services.sync.lastSync: Tue May 07 2019 23:49:03 GMT-0400 (Eastern Daylight Time)
signon.importedFromSqlite: true
signon.rememberSignons: false
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1556902295
ui.osk.debug.keyboardDisplayReason: IKPOS: Keyboard presence confirmed.

Important Locked Preferences

Places Database

JavaScript

Incremental GC: true

Accessibility

Activated: true
Prevent Accessibility: 0
Accessible Handler Used: true
Accessibility Instantiator: UNKNOWN|

Library Versions

NSPR
Expected minimum version: 4.20
Version in use: 4.20

NSS
Expected minimum version: 3.42.1
Version in use: 3.42.1

NSSSMIME
Expected minimum version: 3.42.1
Version in use: 3.42.1

NSSSSL
Expected minimum version: 3.42.1
Version in use: 3.42.1

NSSUTIL
Expected minimum version: 3.42.1
Version in use: 3.42.1

Sandbox

Content Process Sandbox Level: 5
Effective Content Process Sandbox Level: 5

Internationalization & Localization

Application Settings
Requested Locales: ["en-US"]
Available Locales: ["en-US"]
App Locales: ["en-US"]
Regional Preferences: ["en-CA"]
Default Locale: "en-US"
Operating System
System Locales: ["en-US"]
Regional Preferences: ["en-CA"]

To confirm performance is bad for you with and without WebRender?

Flags: needinfo?(sunnyt7)

(In reply to Jeff Muizelaar [:jrmuizel] from comment #2)

To confirm performance is bad for you with and without WebRender?

Yes. I only discovered WebRender as an attempt to fix the issue.

Flags: needinfo?(sunnyt7)
Component: Graphics: WebRender → Graphics
Depends on: 1525387

Can you test Chrome with the --disable-direct-composition to see if it's still smooth?

Flags: needinfo?(sunnyt7)

Just tried - don't see a noticeable difference.

Flags: needinfo?(sunnyt7)

Here's a quick video showcasing the lag:

https://www.loom.com/share/26ec0c53b34d46d8b0ae95ba7d335521

Password is "firefox".

I couldn't record audio, and the screen recorder slowed things down a bit, but you'll see me browse a couple websites in Firefox, browse in Chrome, browse with a reduced window size, and browse a smaller Windows scaling setting.

I forgot to include me browsing with Chrome and --disable-direct-composition, but like I said there wasn't a noticeable difference.

Keep in mind that this page scrolls beautifully smoothly, but not so much with the screen recorder on, so the lag isn't as extreme as in the video. However, you can still see the difference between Firefox and Chrome.

One more example in case it's helpful: https://1drv.ms/v/s!AmsMKBl6rIDugql8c31wWMDlPKwLRQ

Password is firefox again.

Anything else you need from me to confirm this issue? I unfortunately have to switch to Chrome whenever using this monitor (which I'd rather not have to).

This might be another hint. If I run Firefox using my NVIDIA MX150 instead of the Intel UHD 620, AND set the MX150's "power management mode" to "prefer maximum performance", it is almost perfectly smooth again. However, if I use the MX150 and chose anything less than prefer max performance, there is still some stutter.

It seems like maybe Firefox is taxing the GPU at high resolutions much harder than Chrome or Edge are.

Quick update: I think I kinda/sorta figured out the fix for this. Intel Graphics Control Panel > Power > Disable Panel Self-Refresh. It made it about 80% smoother. I'm not sure why it affects Firefox the most.

Using 66.0.5 stable though, it was still about 20% stuttery. I enabled WebRender, but that actually seemed to make it worse. Same with the beta.

However, I've been using the Nightly 68 branch for the past few hours, and it is a huge improvement. I'd say about 98% smoothness now. Just a few cases (which I've reported) where it seems to have some troubles.

(In reply to sunnyt7 from comment #11)

Quick update: I think I kinda/sorta figured out the fix for this. Intel Graphics Control Panel > Power > Disable Panel Self-Refresh. It made it about 80% smoother. I'm not sure why it affects Firefox the most.

Using 66.0.5 stable though, it was still about 20% stuttery. I enabled WebRender, but that actually seemed to make it worse. Same with the beta.

However, I've been using the Nightly 68 branch for the past few hours, and it is a huge improvement. I'd say about 98% smoothness now. Just a few cases (which I've reported) where it seems to have some troubles.

Thank you for the updates, that control panel option is particularly interesting.

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:jbonisteel, could you have a look please?

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Flags: needinfo?(jbonisteel)
Flags: needinfo?(jbonisteel)
Priority: -- → P3
Severity: normal → S3
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