I am using windows 10 64 bit and Prepar3d v 4.5 hotfix 3. I have an i7-8700k with 32 gb ddr4 3000 ram and 2 x rtx2070 video cards and 3 x 32" curved screens and 1 x 21.5 " screen. I have used spacedesk for like years sending info to my android tablets, 1 x 10" and 1 x 7' and they have worked fine, but NOW if I try to use Spacedesk the frame rates of the flight sim drop from 28-30 down to 6-12 fps which is unuseable. Disconnect space desk and all back to normal. !!! I have not changed any hardware !! only change is the hotfix 3 for P3D but I am unable to go BACK to an earlier version.