I've made it all the way through main questline, and am at the end of dragonborn (at miraak). Only consistent issue I have noticed is CTD during combat. Not all the time, maybe the more intense fights? Not sure how to specify exactly, but seems much more prevalent when fighting dragons/(and miraak now, 3 ctd in a row before i can finish fight). If anyone else is having/had an issue similar please let me know what to try, thanks.