Yeah I just did the builtin test. I remembered this was happening before I added the 2nd memory stick, so I pulled the original one to see if it happens again. https://bsd-hardware.info/?probe=85256a78f6Here's a hardware dump of the device. BIOS/UEFI is all the way up to date. This was an issue before I installed the RTL8125 interface.
I ran a full system test, including extended RAM, during the last reinstall. I do work at a college, so I could borrow a replacement set of sticks from the workstation guys, and swap them out as another test I guess, but I would think a memtest would throw an error. Temps and cpu usage are fine as well. It ran fine from about 8am to 1pm today.