Hi all 

Running fsx se, I have a helicopter cockpit set up with my main display a 65 inch  and a second display a 19 inch for my instrument panel. When I  go to full screen mode the instrument panel  is black. I tried borderless gaming program but that did work. 

Cheers 

Rhys      

Not sure that I have a great answer for this.  
 

Paul Johnson’s guide from 2014 which covers dx10 preview and multiple monitors is here but many of the tools referenced are defunct.  

https://www.nzfsim.org/fsx-p3d-tweaks/dx10-fixer-for-fsx/

One takeaway is perhaps to start by turning off vsync, as his notes seem to suggest that was the underlying issue.

note also that fsx doesn’t support two graphics cards in dx10.

 

Thanks Steve 

Got it sorted, I have  auto hot key script and that works 

 

Cheers 

Rhys 

Good to hear that