Highest refresh rate missing on lower resolutions

Thanks for the reply!

Here’s the log: nvidia-bug-report.log.gz (470.9 KB)

I have used this monitor before with MacOS & Windows and they both were able to handle the 100hz refresh rate at any given resolution, however, I don’t know if they were just scaling the native resolution or not.

Could you please elaborate on the ModeValidation option — what property should I be setting? Would it be “NoVertRefreshCheck” or some other?

Again, many thanks for your help so far!