I have reservations on buying any OLED that is going to have a lot of gaming done on it. Because I spent so much on mine, I’m paranoid about burn-in, so avoid anything that has static images. Mind you, I was the same with Plasmas a (TV) generation ago.
I've got a 2013 Panasonic Plasma. I game on it most days for about an hour (sometimes longer on weekends). No burn-in evident after 7 years.