11 Firefox crashes and is lagging after a few minutes. YouTube videos are lag while the sound is normal. Can you help me solve this problem?

If I restart my browser everthing works very well for at least 5 minutes. When I watch several videos to youtube, the LAG comes back and the video begins to freeze aboud every second for just a fraction of a second. The sound is stil played properly it only affects the graphics...
After about 10 minutes watching videos, the whole browser gets lag. Sometimes when I type fonts appear only about a second later. Scrolling is also affected. A few minutes later everything is back to normal, but it' not always t like that?

I don't know what to do, I already rebooted with disabled modules, but I did not notice any difference. My ati graphics card drivers are up to date and I have the problem with firefox, chrome works perfectly.

Best regards, Jan

The offset is now gone. Removal and reinstallation of the plugins and the deactivation of my modules to speed dial (which is sad cause I like them) fixed. I think that's their function to auto-update the previews leading the video shift.
Thank you very much for your quick response and your help. I appreciate it.

Tags: Firefox

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