Achwaq Khalid Reporter
	Description • 10 years ago

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0
Build ID: 20141009030201

Steps to reproduce:

Go to any video website and start playing with the mouse cursor inside that same tab (assuming e10s is enabled of course)


Actual results:

the FPS drops significantly and sometimes it affects the overall performance of the browser (the main firefox parent process jumps start using too much CPU)


Expected results:

shouldn't affect the browser's performance nor drop the FPS on the video

	Jim Mathies [:jimm]
	Comment 1 • 10 years ago

Is this issue with plugin based video or with html5 video? Can you provide a popular site you see this on?

	Achwaq Khalid Reporter
	Comment 2 • 10 years ago

(In reply to Jim Mathies [:jimm] from comment #1)
> Is this issue with plugin based video or with html5 video? Can you provide a
> popular site you see this on?

Mostly Flash content

I'm experiencing on: Google hangout, edX, Coursera, daiymotion and of course YouTube

	Jim Mathies [:jimm]
	Comment 3 • 9 years ago

Hey Achwaq, are you still seeing this?

	Achwaq Khalid Reporter
	Comment 4 • 9 years ago

(In reply to Jim Mathies [:jimm] from comment #3)
> Hey Achwaq, are you still seeing this?

Yes Jim! With flash most of the time, Less to absent when HTML5 is used (exclude YouTube)

	Stephen A Pohl [:spohl] (OOO until 9/8)
	Comment 5 • 9 years ago

This sounds like bug 1121811, with the exception of the cursor part. Have you verified in a recent nightly? Could you tell us the date of the nightly you tested this with? Thanks!

	Tracy Walker [:tracy]
	Comment 6 • 9 years ago

No response from reporter.  This WFM in latest Nightly.

	Achwaq Khalid Reporter
	Comment 7 • 8 years ago

(In reply to Tracy Walker [:tracy] from comment #6)
> No response from reporter.  This WFM in latest Nightly.

sorry for the late reply! i'm still experiencing this especially with YouTube Vp9 videos and some times the audio goes out of sync

	Liviu Cirdei
	Comment 8 • 8 years ago

Could you attach a screen record showing the issue? That would help us to better understand it. Also, please provide the exact urls where you could reproduce the issue.

	Liviu Cirdei
	Comment 9 • 8 years ago

Closing as incomplete due to the lack of response from the reporter. If anyone can still reproduce the issue   on a current build fell free to reopen it and provide more information.