Classic British Flight Sim

Thanks to those who responded... Zoom solution noted. It's not a joystick/yoke problem as I'm using keyboard! Further experiments/experience tend to suggest my a/c objects to other traffic in the area - hence worse near airports. I have tried reloading program, and to different PC - no change.

Newbie here... Has anyone seen this FSX problem before? Flying straight & level in, say, DC3 (any variant), aircraft will bank sharply and drop out of the sky, more often than not happens on finals. Control surfaces do not move when this happens, any correction over-compensates. Also with ATC window ...