Hi I'm running bazzite-deck since yesterday and I do have the problem that when in gaming mode the QAM fps slider only goes to a maximum of 60 fps. I do have a 165Hz display. I have no problems in KDE, this is only in gaming mode. Thanks in advance for your help!
Solution
Finally found the solution. No .conf files where necessary. I just had to enable developer options and then had to activate "Allow external display refresh control"