PC monitors are LCDs (IPS or VA panels most of the time), amoled will always get burn-in marks after some time, it's just the way they age, overclocking on amoleds is quite risky as I said before, the voltage dosn't matter in this scenario, by overclocking a 60hz amoled panel you are just forcing the pixels to update even faster than normal (they obviously wasn't made for that, you get side effects like discoloration), in theory burn-in marks have way more change to appear on a overclocked panel than a 60hz one.
Of course, I'm here just to spread info, everyone can do whatever they want to their devices, if I'm wrong on something I apologize, this is what I know from studying displays along these years