reifoll: FOUND A SOLUTION that works for me (windows 10 Pro 1803).
1. Go to the game directory
2. Right-click SWEP1RCR and then "Properties"
3. Click "Compatibility" tab
4. Click "Change settings for all users" to un-grey out the boxes
5. Uncheck the box "Reduced color mode".
6. Uncheck the box "Always run as administrator"
THIS IS THE WAY
Worked perfectly on Windows 11 23H2
It even worked with my Logitech Extreme 3D Pro flight stick (after I set it up in the settings).
Note: I had to run the "video settings" executable via gog galaxy afterwards to set the resolution to my monitor's native (1920 x 1080) but that only because I had run it previously in another fix attempt.