I just bought a new monitor (ASUS TUF VG279QM). The monitor runs, I think overclocked, at 280hz and it was set to replace my 144hz monitor which now sits to the left of me. Before buying this monitor I had a setup with two monitors. The 144hz and a 75hz to the right of me. I've setup this monitor as my primary monitor (the 280hz one) and I am now running a 3 monitor setup. My problem is whenever videos are playing on both monitors, the right monitor's image (even parts that are not strictly the video but the webpage itself) flickers over to my main monitor for a fraction of a second. From my 75hz onto the 280hz. It's so bad that even playing back that link had my other monitor flicker over. This was never an issue with the prior 144hz and 75hz setup. The forum doesn't seem to allow me posting a gyazo link with a video example