What OS are you on? I remember a similar issue on Ubuntu with Firefox installed from Snap.
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maybe you are a little short on RAM? OS and apps keep growing, but installed RAM does not grow with them. :(
@CadeJohnson That's what came to my mind first, but only about 5 Gigs out of 16 used.
Must be something different :/
@firefox It's more than just youtube vids freezing and crashing single tabs. It's also random crashes of the browser itself (videoconferencing seems to trigger ... not sure what else) .
Is there an easy way of undoing some of the latest updates until this has been fixed?