Yeah, I've noticed that leaving it checked I get probably 25% or more FPS boost compared with unchecking it. I spent a couple hours this morning trying to figure out why I get such poor FPS with the Carenado B1900D and I'm left a little stumped. If I load up the default C-172 or even the FlyJSim 737, I am getting in the 50 to 65 FPS area, but with the B1900D I'm only getting 8 to 12 and I can't figure it out.
What's more, when I switch back OUT of the B1900D to another airframe, the FPS remains significantly lower (down to 20-25 for the default C-172 after exiting the B1900D). Only cure is to exit the sim completely, then re-enter it to reestablish the higher FPS.
How are you guys doing with the B1900D on FPS?
BeachAV8R