Which games?
Are you sure you haven't overclocked the GPU in Afterburner or Dragon Center?
I'm running an 9600k @ 5.046 on air with a 750w psu and an MSI 2070S Ventus OC 8Gb on one screen, and anything more than a +50 over on core clock and +200 on memory makes the DX12 drivers crash. I'll either get booted out of Modern Warfare the second I load a level, or fail 3DMark with a 0 score in Time Spy (the higher the clock, the sooner the crash).
First thing I would do would be to try running without any overclock on the GPU. If that doesn't work, open Afterburner and set the thermal limit to 85C and run the Overclocking Scanner. It's the OC with the magnifying glass in the top left corner, above the clock on the left, then save the curved profile and try playing a game with that on.
If that still doesn't help, I'd start looking at your overclock, or (more probably) your ram (especially if set to XMP).
On the one hand, I'm kind of disappointed that the binning on these cards barely leaves any headroom for an overclock, but I'm also running MW with ray tracing and max settings >60fps @ 2160 and Borderlands 3 in 1440 @ > 90fps, so for the money (only $10 over founder's edition), I feel like I got what I paid for?
