I'm using ASUS TUF VG279QM, which has a native refresh rate of 240Hz but can be overclocked to 280Hz in the OSD settings. I've been using the monitor on 280Hz for about a year now, but I turned the overclocking setting off for testing purposes.
Now, for whatever reason, the overclock setting is not saved in the OSD upon trying to turn it back on. The monitor is stuck at 240Hz, and whenever I turn on the overclock setting and close the OSD settings, it simply doesn't save the setting and displays it as "off". Every other setting works normally within the OSD.
What could be causing this? Turning HDR on and back off in Windows settings doesn't work. I've also tried switching the DisplayPort port, updating NVIDIA drivers and restarting my PC/monitor to no avail. Thanks to anybody who can help!