I have an Alienware 240hz and an LG OLED B9
I tested Overwatch and CSGO (1080p / 120hz). no noticeable addition in input lag.
Even though the monitor is twice as fast as the TV,
the overall clarity in motion looks indeed better on the OLED due to the lack of motion blur.
Unfortunately my RTX 2070 can't output 4k at 120hz, I can only imagine how great this is.
Really impressed with the OLED, I can only recommend it
I wanted to have a PS5 but at this point, I will just buy whichever console is available to me first. I just wanna play