Really an odd one here but it's driving me nuts: I have a multi-screen setup that includes my (usually set as main) 1440p monitor and my TV, which is what I want my game to display on. I can switch my display settings to having the TV as my only monitor and it still will not start my game properly (i.e. black screen until I hit ctrl alt delete, alt tab doesn't even work). Once I come back from the ctrl + alt + del screen, everything is back to normal. I have to do this literally every time I try to use my TV as my display, however I have discovered recently that my TV will display everything correctly the first time provided it was set as the "Main" monitor in Display Settings before my last reboot.
It does not behave the same the other way around however; my 1440p monitor still behaves correctly if I want it to be my game's display even if my TV was the main display prior to the last reboot. I'm assuming there's some sort of scaling issue here but I cannot figure out how to resolve it; I've tried having Run as Admin on/off, "disable fullscreen optimization" on/off, DPI settings adjusted in the Compatibility settings, etc. It behaves the same way regardless of if I'm trying to launch through Big Box or Launchbox as well. What does the "needs to be Main display before last reboot" thing suggest/what settings would that even involve?
Not sure if it's relevant or not but I guess I should mention my monitor is hooked up via Displayport on my GPU while the TV uses an HDMI port.