|Check the refresh rate setting for the monitor in Display Properties on the desktop PC where flickering is observed. Too low a refresh rate can cause flickering. |
The specific refresh rate setting is saved in (and is applied by) Windows, it doesn't follow the monitor around from PC to PC, which would explain why it flickers on one PC but not on another.
Default setting is 60 Hertz. Upping it to 70 Hertz may fix it.