test was smooth, no problems. But cut my fps in half. 16 - 20 in tower, same on runway. Came up to mid 30's in flight.
Uninstalled all versions of ah & ah2, downloaded fresh ah2, installed.
Copied sights, settings over.
256 textures instead of 512 default with test. All other settings identical.
34 - 38 in tower, same on runway.
Soon as I'm 2k above ground I'm hitting 60's (would be higher but I locked it at 60)
Fly's smooth & clean with minor jumps as long range plane dots change distance/position.