You need to test, test, test. Buy new monitors so you can return them if they are bad. Start with something simple. 60 Hz, true 8 bit, flicker free, 250 nits. No gimmicks, no HDR, no high refresh rate. If that doesn't work, try downgrading the OS. I personally needed to sell my new stuff and buy older tech from the second hand market. Hope it doesn't come to that.