I played the example video in the OP and my CPU utilization was 1%. WebGL Renderer - Intel Open Source Technology Center - Mesa DRI Intel(R) Sandybridge Mobile Vendor ID - Intel Open Source Technology Center GPU Accelerated Windows - 0/1 Basic (OMTC) System has a dual-graphics(Intel+GeForce GT 525M - Optimus tech running Bumblebee)Īdapter Description - Intel Open Source Technology Center - Mesa DRI Intel(R) Sandybridge Mobileĭevice ID - Mesa DRI Intel(R) Sandybridge Mobileĭriver Version - 3.0 Mesa 10.6.0 (git-5d327b3)

I looked into the process list and Web Content was causing this.Īlso if it might be of any help Web Content was related to this command - '/home/USER/firefoxN/plugin-container -greomni /home/USER/firefoxN/omni.ja -appomni /home/USER/firefoxN/browser/omni.ja -appdir /home/USER/firefoxN/browser'įor me on YouTube except webM everything else is enabled. On 720p60fps on Linux (Fedora 22) the CPU Usage spikes very very high and keeps fluctuating. I've also experienced a similar issue on Nightly 42.0a1 () after becoming aware by a reddit user's comment.

Ffmpeg exe in firefox using cpu