Hello Hylke. I'm Greg, here to help you with this.
This is a basic peer user forums sponsored by Microsoft where users try to help others with problems. So Microsoft will not even see this here.
If you'd like to report this as a bug to Microsoft using the Feedback Hub app in Start Menu where developers are tasked to process consumer feedback. They will not even see it here. Microsoft developers DO read feedback from customers that comes in via the Feedback Hub, so that is a great way to share your thoughts on how to better serve you as a customer.
Also, the Display driver is so important that merely updating it might not be enough. Try everything here to make sure:
https://answers.microsoft.com/en-us/windows/for...
There are also brightness issues reported with Windows 11 HDR here:
https://support.microsoft.com/en-us/windows/hdr...
https://www.reddit.com/r/ultrawidemasterrace/co...
https://www.theverge.com/23389674/microsoft-win...
https://www.youtube.com/watch?v=cPUqTnTbxOE&...
https://www.youtube.com/watch?app=desktop&v...
I hope it helps. Feel free to ask any questions.
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