Incorrect display configuration

I am spoofing a 14.2 imac on catalina 10.15.7. my monitor is plugged into an optiplex 3020, i3 4150 via displayport. MacOS is reading my monitor as being 41 inches, I have no arrangement tab and no option to change refresh rate, which seems to be stuck at 30hz. How can I fix this?

submitted by /u/mattlehuman
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