Hey!
I am having a problem with Prepar3D v4.2, but also on lower V4 versions..
When I am flying, or just on the ground I get black flashes on the screen ( https://youtu.be/r6XMLGa1ymo )
I tried lowering the graphics in settings, but it won't work.
My system specs:
Prepar3d V4.2.21.24048
i7-4790 @ 3.60GHz
NVIDIA GTX 1050ti 4gb
16 RAM