I have a batch of scanned tiff file with resolution around 5990 x 7600, and when I viewed them at 100% with my 144 Hz LG 27GL83A-B monitor, I'm getting flicker. This problem doesn't occur when I switch to 120 Hz or when I zoomed out. After more testing, I narrowed down the problem to that the flicker only occurs when the image being displayed exceeded a certain width on the screen. Like this:
There is no flickering with the width of the image viewer here, but anything longer than that it will flicker. I'm also suspecting the problem to be cause by the screening pattern on my image, because if I remove the screen, the flicker goes away.