Works brilliantly on Facebook, but Youtube became a real mess recently. First the NFE if switched on for YT made some videos unwatchable (usually CPU performance started getting to 100%), but then also mouse clicks started freezing i.e. left-clicking anywhere wouldn't do anything. The issue is limited only to YT, all other sites work perfectly fine. Refreshing page doesn't do much.

I'll keep using NFE for Facebook, but please do something about that Youtube performance.