Yup, I tried MMGL-MMMX. Both 3rd party, before SU12 I already have flown that route but since WU12 release, it started CTD while taxiing at MMGL. Also in KDTW, In SU11 I used to fly from and to all the time, now in SU12 is almost imposible to start my takeoff roll before my sim CTD.
3 days ago I tried KLAX-KDTW, after 1:30hr in cruise my sim CTD.
So I'm saying that there was a massive performance downgrade in the aircraft because before SU12 I was able to fly from anywhere with any addon without issues, now it's impossible.