As title states.
Only seemed to kick in after I had uncovered a significant protion of the map.
FPS drops to single digits.
Changing graphical options seemingly has no effect.
Loaded other saves from different plays and they have the same problem.
With previous version I had no issues whatsoever and could easily run (60+ fps) a 30+ faction game on an insane map with all graphical options cranked up to max.
GTX 980 with latest drivers
16GB RAM
i5 2500k
SSD Running Windows 7 64bit