Upgraded to Windows 11 a few weeks ago. No problems with NR20O3. Game actually runs better and very smooth.
from what I watched, it seems like Windows 11 has just decreased performance of the game a tad bit. I personally am sticking to Windows 10 until most users switch to 11.
Did you install all the necessary patches including Compatibility Mode. I installed Windows 11 about a year ago and NR2003 works fine with no issues. With the NO-CD patch I set the Compatibility Mode to Windows 7. My understanding is that the NO-CD patch was made for Windows 7. You can also reference this youtube video which helped me quite a bit.View: https://www.youtube.com/watch?v=WBrh-9BdGVQ&t=397s
I set compatibility mode to win7 and it still crashes to desktop
- Uncheck 'Enhance pointer precision'
- Enable 'Game Mode'
- Disable 'Record what happened'
- Disable unnecessary apps in Startup
- Check GPU priorities on games
- Check 'Power Plan'