Initially, Firefox seems to not have used hardware decoding at all ("Video Decode" was constantly 0% and video playback looked more like a slide show, which is what sent me this way), but after reading some posts I found that the Crash Guard disabled hardware acceleration: Crash Guard has disabled features Also, CPU load is significantly higher (~60%).Ĭhrome: !AvhLHUqJlzNFnnTVMbExvAZQYVFj?e=JEBZEFĮdge: !AvhLHUqJlzNFnnLnCfH_BFQFDkVO?e=v5lyVWįirefox: !AvhLHUqJlzNFnnNh6X9INakWs3e3?e=eX3w8z
When playing the video in Firefox, "Video Decode" is moderate again (~50%), but "Video Processing" is constantly 0% while the load in the "3D" graph is very high (~90%). Looking at the (GPU tab of the) task manager I saw the same load pattern LittleVulpix describes: Edge and Chrome put moderate load (~50%) on "Video Decode" and "Video Processing" while "3D" is close to 0%. I just noticed this for the first time as I switched to a 4K display (and hence started playing videos in 4K/60fps). On a Surface Book 2 (i7-8650U, Intel UHD 620 also has a NVIDIA GTX 1050 as D-GPU, but it is not used and should not be relevant to this issue) with latest Intel video drivers.Ī 4K 60fps video on YouTube ("The World in HDR in 4K (ULTRA HD)", ) plays smoothly in Chrome and Edge with moderate CPU load, but in Firefox a lot of frames are dropped (confirmed with the "Stats for nerds" panel) resulting in stuttering and something that feels more like 15-20fps). I seem to be experiencing the very same issue with Name: Firefox (In reply to LittleVulpix from comment #5) I can supply any/all info and don't mind to try a few things to get this debugged.įor starters, I tried forcing webrender to be on, I tried messing with the layers settings, (but I also tried a clean profile) but with no success. If you think this warrants separate bug report, I can do so but I also have an Intel CPU (with UHD graphics) and the symptoms are the same as described by the bug reporter. So it's not as though hardware acceleration is not used at all it's just not used for everything as it should be.
#Gpu o 3d software
It is my guess that somehow, Firefox doesn't use hardware for video resize and instead does this either using shaders (which are not optimized for it), or by using software to do the resizing. When using a chromium-based browser (chrome, edge-chromium, opera), the CPU utilization is much lower and the GPU utilization is spread across "3D", "Video Decode" and newly also "Video Processing".
#Gpu o 3d windows 10
I have the same problem as reporter, except since my CPU is a lot slower, the problem is a lot more "visible".Īny video playback in Firefox (h264/vp8/vp9) only uses the "3D" and "Video decode" parts of the GPU (I'm using the terns from gpu-z sensors / windows 10 task manager). I'm not concerned about NVIDIA HWA, this is just for comparison. The numbers you see are relatively stable, so you're looking at average %. This shows that HWA didn't help to reduce the CPU utilization. HWA clearly helps to reduce the CPU usage in both browsers.Īlways on 3D mode, never decodes or processes the video.
Here is side by side comparison during an idle video playback without interaction:įirefox always stays on "3D" mode and has significantly higher CPU and GPU utilization. Does this indicate a bug in hardware acceleration that won't allow proper decoding and processing in Firefox? When a YouTube (all tests are on old non-material layout) video is playing, the "GPU Engine" is always at "GPU 0 - 3D", while Chrome will frequently say "GPU 0 - Decode" and "GPU 0 - Process". Could this indicate a bug in Firefox that keeps the HWA enabled for no purpose? Chrome will populate it with "GPU - 0" data only if a video is playing, then empty the field once it's done.
The "GPU Engine" tab in new Task Manager always says "GPU 0 - 3D" next to Firefox process, even if there is no media playback. With Windows 10 Fall Creators update's introduction of GPU tab in Task Manager, I recorded some stats and would like to share them with you:įirefox always keeps the hardware acceleration running. Generally it's not a pleasant experience. Sometimes the fans will spin hard and make a noise, and excessive CPU usage has bigger impact on battery life (below tests are on High Performance mode while plugged in).
#Gpu o 3d drivers
Tested with the latest Intel graphics drivers from Dell, as well as generic Intel drivers from .įirefox uses excessive CPU while playing a video on any website (e.g.
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