Addons like TSM, questie and other resource hungry addons.
Update 3 - I think we narrowed it down to addon issue. Next step is to turn off logging I think and then a full clean out of addons entirely. Update 2 - have done the following with no success :( deleted all tbc addons (most were not loaded) turned off questie, turned off details, turned off weakauras only have about 4 weak auras on and those are some shaman earth shield and water shield addons. Got a raid tonight will let you know how it goes! Update - deleted healbot, details and went through and deleted all the old tbc addons. (I use a number of addons but nothing obscure, most at in the most popular list) Has anyone found what addon it might be or seen a boost in performance from dropping an addon. I have a pretty fast computer and a 1080ti so I don’t think it is a performance issue.