I sit about 2 feet away from a 42" OLED TV used as a monitor and I didn't notice anything, at least nothing that attracted my gaze and broke immersion, what I noticed was how much smoother and nicer it actually felt to play - also on a mouse and keyboard. I think FG off just felt like bad frame pacing more than a responsiveness thing, where FG on was perfectly smooth butter, but It's also odd to me and maybe something is up with my FG OFF frame pacing that isn't showing in the frame time graph? because yeah I mean I'm not exactly new to keyboard and mouse shooters and how they feel, and I am very sensitive to latency and artefacts. More playtime and investigation needed on my part.