I don't know if this is a known issue, but I find that HDR causes my undervolt to become unstable. I set the 5700 XT to 1980 MHZ and 1010 MV and that has been stable for pretty everything but as soon as I turn on HDR on Windows 10, playing graphically intensive games cause crashes. I have a 3700x with 32 gigs of ram and three monitors. The main monitor with HDR is the Dell s2721dgf.
