I upgraded to Fedora 35 Beta and everything worked surprisingly well, except that after the upgrade, I can’t play videos anymore - neither in Firefox, Chrome or VLC. For instance, on YouTube and many other platforms, the video’s loading spinner just will hang there forever - but without any error message. Also, my webcam video stream won’t work anymore. It shows like one frame every 30 seconds or so.
I’m on Wayland and have an NVIDIA graphics card.
Also, if that is somehow relevant, another issue that I have is some applications taking literally minutes to start up (see here).