It's not new to me that outdated addons will bug out in new patch, but now it causes more problems than before. When i'm in scenario/hc, as long i'm attacking mob, my fps drops to 1-5. Must be some addon that has not updated yet.
I thought i solved the problem yesterday when i disabled scrolling combat text addon and it worked, but today same problem came back and i'm not changed anything. (???) I've already tried few other outdated addons that could cause something (like recount etc., disabled Perl classics's threat meter) but no difference. I have so many addons that it could take ages to check each one invidually, joining scenario and getting deserter debuff for leaving it as i'm not going to waste other players time solving addon problems in their instance.
So, TL;DR: anyone had same problem and did you found what addon it was specifically?