In case of TVs, A(S)BL (automatic static brightness limiting). Use a small patch size, white level drift compensation, dark desktop background (or use madTPG), potentially use pattern insertion. Aim for a peak luminance of 100-120 cd/m2.
I do know the newest Razor Blade 15 2019 laptop OLED model will do some weird dimming (as it’s a power limit thing) if you have the backlight at 100%, so you would want to turn the backlight down a bit in this case. But yeah, targeting 100-120 cd/m2 should probably prevent this in all cases.