I have the same problem with a RAM leak, the only thing that more or less helps is to limit the consumption of RAM in GX Control, and even then, this does not solve the problem with the YouTube tab freezing and memory leaks, and it works after a time or two. My computer is not that weak but not powerful either, but before this everything worked fine and there was no RAM leak.
Thanks for the reply, I think I also stumbled onto the same fix a while back, still doesn't hurt to have a troubleshoot guide for future users. Cheers!
@isaac2875 No experience with the Mac version, but there should be a Quick settings button on the right side, or lacking that you should be able to change it in Settings, At the very least you seem yo have been switched out of Dark mode, changing that setting might be enough.
Edit: I see it's called Easy setup, not Quick settings (in Windows anyway). Far right on the address bar