Drallen The only difference in new test vs 0.193 which on site is uncompressed textures handling. But why it fails is unknown and definetly not correct behavior, so i will not search for the problem because it not exist from my side, users must find out which software doing this for AMD and NVidia ...

The problem is even with ReduceSystemMemoryUsage, it remained unstable in 0.192. Normally solved with 0.193. Have to know why these CTDs at startup. Are you using ATTK or Misc DLL ? Not at all, well I'm using skse, but that's all... I didn't even know anything about attk until you bring that up :) ...

Boris, It was ReduceSystemMemoryUsage=true that was crashing tesv.exe at startup - this setting worked fine in .192. The other two settings did not appear to cause a problem. I have reverted to .192 for now I confirm that. BTW I'm willing to test any new tweak too, if you need testers... My configu...