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  • Do you have Variable Refresh Rate (G-Sync or whatever) enabled for your desktop?
    – Daniel B
    Commented Jun 2 at 15:00
  • @Daniel_B I just tried changing this via the monitor. The issue persists on all three options (Extended, Basic and Off).
    – Leo
    Commented Jun 2 at 15:37
  • If you change the refresh rate of the monitor does it help the performance outside of an application. You can use Nvidia Control Panel to set the refresh rate within individual applications. I oddly suspect this issue is linked to the 144Hz refresh rate.
    – Ramhound
    Commented Jun 2 at 16:03
  • @Leo Not sure what you might be referring to. The display does not control the signal it receives. That’s the PC. In NVIDIA Control Panel, under “Set up G-SYNC”, I have two options: Full screen only or windowed and full screen. Which is selected on your system?
    – Daniel B
    Commented Jun 2 at 16:24
  • 2
    @Leo - Verify the cables support the highest HDMI or DisplayPort standards that the monitor and GPU support. 4K@144Hz will require the latest of both.
    – Ramhound
    Commented Jun 2 at 17:15