Screen changes resolution to 640x480 randomly

I have different Optiplex Micro Desktops (3080, 5060, 7070) all installed with Windows 11 and sometimes the resolution of the screen changes to 640x480. In the settings i cannot change it back to the regular 1920x1080, the only option i see is the 640x480. All desktops are connected with displayport cables to their monitors. Only unplugging the cables solves the issue, but it's not a long term solution obviously.

I have checked the graphics, monitor and BIOS drivers on the desktops and they are all up to date. I also tried reverting back to older drivers, but the issue still stands. The issue started like a month ago and every week it keeps happening to more desktops. 

Has anyone came accross this problem? Thanks!