1423925 - Full screen 1080p60 video can often drop to 30fps when using a dual monitor setup

Status: UNCONFIRMED

(Core :: Audio/Video: Playback, defect, P3)

Description

[mrbridgesix]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0
Build ID: 20171204150510

Steps to reproduce:

Full screen 1080p60 YouTube can often drop to and stay at around 30fps until paused and resumed again. Seems to only happen while in full screen video and when both monitors are hooked up (duplicated mode).

One interesting thing is that the YouTube player stats report no dropped frames, but you can see the drop from 60 to 30 when using an overlay. (Rivatuner/FRAPS)

I've briefly tested on the latest nightly release and the issue seemed to be fixed or at least less occurring.

Video Card: GTX 1060
Video Driver:388.43

Other reports: https://goo.gl/5iXG9N
Might be related to: https://goo.gl/kbxad5

 


Actual results:

Full screen 1080p60 video often drops to and stays at 30 fps until paused and resumed. * When using a dual monitor setup.


Expected results:

1080p60 video should play flawlessly.

Comment 1

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

(In reply to mrbridgesix from comment #0)
> User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0)
> Gecko/20100101 Firefox/58.0
> Build ID: 20171204150510
> 
> Steps to reproduce:
> 
> Full screen 1080p60 YouTube can often drop to and stay at around 30fps until
> paused and resumed again. Seems to only happen while in full screen video
> and when both monitors are hooked up (duplicated mode).

My guess is that the duplicated mode is doubling the memory bandwidth required to drive the screen. You'd hope that this wouldn't be necessary but the symptoms indicate it is happening.

What screen resolutions are you using?

> One interesting thing is that the YouTube player stats report no dropped
> frames, but you can see the drop from 60 to 30 when using an overlay.
> (Rivatuner/FRAPS)

That is a known bug where Firefox doesn't report frames that are dropped into the compositor.
 
> I've briefly tested on the latest nightly release and the issue seemed to be
> fixed or at least less occurring.

If you can reproduce it reliably then you can figure out where it was fixed using mozregression. Any change in either Firefox or Windows that improves GPU load could tip the scales in favour of working.

> Might be related to: https://goo.gl/kbxad5

Bug 1422758 is not related and in fact is not really a bug at all. The design decision is to use full dynamic range across the board, rather than the driver defaults which vary between GPU manufacturers.

Can you please provide the graphics section of about:support?

Comment 2

[mrbridgesix]

(In reply to Anthony Jones (:kentuckyfriedtakahe, :k17e) from comment #1)
> What screen resolutions are you using?

Both screens are 1920x1080 @60hz, sometimes they are run with different color depths depending on what I'm using them for.

> Can you please provide the graphics section of about:support?

Sure.

Graphics
--------

Features
Compositing: Direct3D 11 (Advanced Layers)
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled
WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000007532) EGL_VERSION: 1.4 (ANGLE 2.1.0.db3422764a9b) 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_nv12 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_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_ANGLE_display_robust_resource_initialization
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 1060 6GB Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.db3422764a9b)
WebGL 1 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture 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_robust_resource_initialization 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_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
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: 0000000000007532) EGL_VERSION: 1.4 (ANGLE 2.1.0.db3422764a9b) 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_nv12 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_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_ANGLE_display_robust_resource_initialization
WebGL 2 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 1060 6GB Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.db3422764a9b)
WebGL 2 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture 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_robust_resource_initialization 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_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
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
Off Main Thread Painting Enabled: true
DirectWrite: true (10.0.16299.15)
GPU #1
Active: Yes
Description: NVIDIA GeForce GTX 1060 6GB
Vendor ID: 0x10de
Device ID: 0x1c03
Driver Version: 23.21.13.8843
Driver Date: 11-27-2017
Drivers: C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_2d65b7647eff8c45\nvldumd.dll
Subsys ID: 119f196e
RAM: 6144

Diagnostics
AzureCanvasAccelerated: 0
AzureCanvasBackend: Direct2D 1.1
AzureCanvasBackend (UI Process): skia
AzureContentBackend: Direct2D 1.1
AzureContentBackend (UI Process): skia
AzureFallbackCanvasBackend (UI Process): cairo
GPUProcessPid: 9556
Decision Log
WEBRENDER:
opt-in by default: WebRender is an opt-in feature
unavailable by runtime: Build doesn't include WebRender

Comment 3

[Blake Wu [:bwu][:blakewu]]

Are you able to see this problem on Chrome?

Comment 4

[mrbridgesix]

(In reply to Blake Wu [:bwu][:blakewu](OoO until 12/6) from comment #3)
> Are you able to see this problem on Chrome?


Not the exact same issue, this drop to ~30 fps until paused and resumed is very unique to FF.

Comment 5

[mrbridgesix]

Performance degrades overtime when playing high framerate video, this can be easily seen in the performance tab, after 15min average fps is at 37.

Happens on Youtube and on Twitch so not actually VP9 related.

Comment 6

[mrbridgesix]

(In reply to Blake Wu [:bwu][:blakewu] from comment #3)
> Are you able to see this problem on Chrome?

Benchmark showing the behavior, jump back to 60 fps only happened because I intetionally paused and resumed the video.

https://drive.google.com/file/d/1lfXwpZqTFibX5Pj8dRmmYu0gWyNSNKNg/view?usp=sharing

Comment 7

[mrbridgesix]

The brute force fix for this is to set the firefox nvidia power manegement to 'Prefer maximum performance'.

On desktop there should no real drawbacks to doing that.

Comment 8

[Ralph Giles (:rillian)]

Dan, here's another compositor performance issue. If we're not reporting dropped frames to the YouTube player it's not a decoding performance problem.