I can even set it on 85 it will work like I won't get black screen everything will be normal expect that first 1 minute I will get input not supported on center of my screenShould be able to set it higher, however you might run into issues with a high refresh rates. Make sure "show resolutions not exposed by my display"
Overclock. Be aware overclocking your monitor is never safe and can break your monitor.
yh Ik that but u usually get black screen when not workingWell, then your monitor isn't capable of running at that speed. If 75 is the highest it works at, 75 is the highest overclock you are going to get. You can't just bump refresh rates up with no limits, otherwise, nobody would pay for a 144hz.