Jabberw00ky

I have the exact same issue with my 2080ti black edition. I am on a second PSU has well. Went from Silverstone sx700w gold to sx800w LTI. Did all the same attempts to solve the problem. . My temps seem good. I am coming close to RMA, but it seems this is an unaddressed issue with the 2080 and 2080ti. I am wondering if there are spots on the VRM that are not in contact with cooler, but I don't want to void warranty to find out. The only solution I found is not running any overclock and restricting the fps in games to display based. Plus under powering the GPU 90%. But that keeps clock speeds down around 1575mhz and cant even touch the memory clocks on the gpu.