Hi vanosNT,
Welcome to Microsoft Community.
Unfortunately, Windows doesn't yet have the ability to enable/disable HDR for different games.
In Windows 11, the Win + Alt + B shortcut key combination is used to control the enabling and disabling of HDR.
At this stage, HDR is more about global-level color profile control.
Optimizations for HDR or other similar user experience improvements rely on feedback from users.
Microsoft attaches great importance to user experience, you can submit your ideas and suggestions through the Feedback Hub, and the development team will regularly review submissions for ideas or fixes.
Please share the feedback link here after submitting as it will allow others on the forum to vote for your submission, including me.
More votes will lead to more visibility and higher priority to the development team.
If I misunderstand your situation, feel free to correct me and share the information.
Best Regards,
Kyo - MSFT | Microsoft Community Technical Support