After updating to Firefox 46 I started noticing that when I browse 9gag or any site that has gif images performance is horrendous and the browser simply freezes. I started disabling add-ons one by one to rule out influence but nothing helped. Restarting in safe mode(no add-ons enabled) fixes this immediately, performance is as smooth as you can wish it to be. Hence I did a refresh of Firefox but this did not solve the problem at all. However if I restart my just refreshed Firefox in safe mode then the problem fixes.
Safe mode disables HWA. Can you test with HWA turned off. https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration In addition, enter about:support in the location bar and paste the section graphics.
HWA was it, when disabled specifically everything improves. Jees, I resorted to using IE for some time. Anyway, here's the graphics section: Adapter Description NVIDIA Quadro 2000M Adapter Drivers nvd3dumx,nvwgf2umx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um,nvwgf2um Adapter RAM 2048 Asynchronous Pan/Zoom none ClearType Parameters Gamma: 2200 Pixel Structure: R ClearType Level: 50 Enhanced Contrast: 0 Device ID 0x0dda DirectWrite Enabled false (10.0.10586.0) Driver Date 3-18-2016 Driver Version 10.18.13.6213 GPU #2 Active false GPU Accelerated Windows 0/1 Basic (OMTC) Subsys ID 1631103c Supports Hardware H264 Decoding No; Hardware video decoding disabled or blacklisted Vendor ID 0x10de WebGL Renderer Google Inc. -- ANGLE (NVIDIA Quadro 2000M Direct3D11 vs_5_0 ps_5_0) windowLayerManagerRemote true AzureCanvasBackend skia AzureContentBackend cairo AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0
I have tested your issue on latest FF release (46.0.1) with HWA enabled/disabled, I've browsed on 9gag home page and also on 9gag "GIF" category, images seem to load as usual and I haven't observed any performance issues in loading gifs. The page is loading fast and scrolling down the website works as smooth as possible, I haven't encountered any rendering issues or latency. I haven't managed to reproduce it using a PC with the following specifications: - Windows 10 x32 Bit - Processor: i5-6500 CPU @ 3.20GHz (4 CPU's) - Memory: 16384MB RAM, Available OS Memory: 2290MB RAM The issue might be something related to your configuration, could please you give us more information regarding your hardware specifications? Also could you please take a profile as you are experiencing your issue and post your results. https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Profiling_with_the_Built-in_Profiler
I have been running into this issue as well. It is present in Firefox 46 but I have noticed it for a few versions now. I can crash Firefox fairly consistently by following these steps: 1. Open http://www.neogaf.com/forum/showthread.php?t=798812&page=19 (page with a number of large GIFs) in new tab. Do not actually go into the tab at first however. Just let it load in the background. 2. Wait for a few minutes then open the tab and try to scroll to the bottom. It's not necessary for the tab to be finished loading yet. 3. Firefox will stutter and freeze. This is in Firefox 46.0.1 64-bit Windows 10.
I just tested with HWA disabled as well and it seems to help somewhat but Firefox still has issues with stuttering and briefly freezing up. It did not outright crash when I had HWA disabled however. Graphics info from about:support Adapter Description NVIDIA GeForce GTX 580 Adapter Drivers nvd3dumx,nvwgf2umx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um,nvwgf2um Adapter RAM 1536 Asynchronous Pan/Zoom none Device ID 0x1080 Direct2D Enabled true DirectWrite Enabled true (10.0.10586.0) Driver Date 5-9-2016 Driver Version 10.18.13.6519 GPU #2 Active false GPU Accelerated Windows 1/1 Direct3D 11 (OMTC) Subsys ID 086a196e Supports Hardware H264 Decoding Yes Vendor ID 0x10de WebGL Renderer Google Inc. -- ANGLE (NVIDIA GeForce GTX 580 Direct3D11 vs_5_0 ps_5_0) windowLayerManagerRemote true AzureCanvasBackend direct2d 1.1 AzureContentBackend direct2d 1.1 AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0
I was able to reproduce the stuttering and freezing using the URL from comment 4 on the latest Firefox Release (46.0.1, Build ID 20160502172042). However I wasn't able to do the same with the latest Nightly (49.0a1, Build ID 20160530071207). Would you mind retesting this issue on the latest Nightly (https://nightly.mozilla.org) and provide the results? When doing this, please use a new clean Firefox profile.
(In reply to Ciprian Muresan [:cmuresan] from comment #6) > I was able to reproduce the stuttering and freezing using the URL from > comment 4 on the latest Firefox Release (46.0.1, Build ID 20160502172042). > However I wasn't able to do the same with the latest Nightly (49.0a1, Build > ID 20160530071207). > Would you mind retesting this issue on the latest Nightly > (https://nightly.mozilla.org) and provide the results? When doing this, > please use a new clean Firefox profile. I got the same results as you did. On a clean profile with Nightly 49.0a1 I did not encounter the issue and was able to scroll down the page smoothly.
I have further investigated the issue and found that it is not reproducible on the latest Firefox beta (47.0b9) and Aurora (48.0a2). Seeing as a new release will soon come(June 7, 2016) I will mark the issue as Resolved-Worksforme based on comment 6 and comment 7.