Firefox Screen Sharing hurts performance even after turning screen sharing off

[kjjohnsen]

Description If I screen share on firefox, the performance drops dramatically, and even when I remove it, the performance does not come back.

To Reproduce Steps to reproduce the behavior: Screen share Stop screen share

Expected behavior A clear and concise description of what you expected to happen. I somewhat expect the performance not to drop when I share, but I expect the performance to return when I stop sharing.

Hardware

• Device: Alienware 15r3 with Nvidia Geforce 1070 gpu (using discrete graphics)
• OS: Windows 10
• Browser Firefox 74.0 (64-bit)

Additional context Using hubs.ieeevr.online

┆Issue is synchronized with this Jira Task

[arpu]

what i see is if i stop screensharing the permission alert does not get removed it needs a track.stop()? in https://github.com/mozilla/hubs/blob/master/src/scene-entry-manager.js#L469

[brianpeiris]

Can confirm this. It's most noticeable if you share your entire screen.

[keianhzo]

@arpu Can you still reproduce this? We are already stopping the video track after the sharing ends: https://github.com/mozilla/hubs/blob/57f720bb372decb47980d118434d501bc2d31600/src/scene-entry-manager.js#L498