Slight drop in FPS for me, with the payoff of having slightly less stutters.
Biggest problem with the patch is I get a Black Screen when starting up and need to Alt-tab out of the game and hit the launcher icon in the task bar to get back in properly.
I also get the game jumping back to Desktop for a few seconds, just before a mission starts and every time I hit Esc to use a menu in-flight.
Oh, and the bug that prevents full-screen at less than desktop resolution is back.
