My browser (FF66 Win10) lags and hangs when browsing this site. Also, the AV1 videos have frozen and I can't get them to play again without refreshing. I can re

My browser (FF66 Win10) lags and hangs when browsing this site. Also, the AV1 videos have frozen and I can't get them to play again without refreshing. I can recreate both of these bugs by simply changing tabs. Despite that, I'm ready to switch to video too.