Highest refresh rate missing on lower resolutions (1080p at 165hz)

Hi guys, I’m having the exact same problems as described in the following forum post (also popos, most recent nvidia drivers, GTX 1660super):

However, I followed the instructions and I still couldn’t get 1080p@165hz to work (my monitor maxes out at 2k@165hz and 1080p@165hz works on Windows11)

I added the following to my /etc/X11/xorg.conf.d/10-monitor.conf:

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    Option         "ModeValidation" "AllowNonEdidModes,NoEdidMaxPClkCheck,NoMaxPClkCheck"
EndSection

Rebooted, and got more options available on nvidia-settings, like 1920x1200 scaled. However, still no 1080p@165hz available.

Any ideas? My monitor is KTC H27T22 if that matters. Thank you!

Some more stuff:

My original monitor edid (I’m using a custom one so this one isn’t applied, but probably useful):
monitor.edid .txt (256 Bytes)
(btw it’s not actually txt it’s edid but forum doesn’t let me upload edid directly, just remove extension)

Nvidia bug report log: nvidia-bug-report.log.gz (629.9 KB)