First time hearing that about OLEDs, can you elaborate? Is it that the lack of inherent motion blur makes it look choppy? As far as I can tell that's a selling point that even some non-oled displays emulate with backlight strobing, not something displays try to get rid of.

Also the inherent LCD latency thing is a myth, modern gaming monitors have little to no added latency even at 60hz, and at high refresh rates they are faster than 60hz crts

Edit: to be clear, this is the screen's refresh rate, the game doesn't need to run at hfr to benefit.