Like I said on every single OC tool for years 1125mv was always what I ever used and worked perfectly fine for 1996mhz on mine, even hours of memtest passes and finishing RES6, Res Revelations 1, Revelations 2, not a single crash or error found.I have some doubts that 1125mv was stable for 1996mhz on Erista. Just use 1175mv for it. Plus for some reason it seems like for gpu undervolt to work on Erista on high ram clocks you need higher ram voltage. Just try the EPV moderate kip out. Also try NO_ADJ instead of AUTO_ADJ because that's what old OC suite used.
Also leave min CPU volt at default too low and it can cause emunand corruption.
And even loading my old emunand it's working fine on memtest with 0 errors but with this OC tools is a no go sadly
For the ram I really didn't even touched anything else, all was stock but still memtest always finds errors with 1996mhz at 1125mv even if the CPU is set to just 1ghz and no other OC and no other changed voltages... The tinymemtest does indeed finishes all tests fine, but the normal one always finds errors pretty fast even in the fast test and stops.
ps: Also would be cool if someone could get into github and tell the dev if he could add the ReverseNX-RT sync.