This has been going on for a while now, maybe 6 months and I'm finally tired enough to ask for help. I have a file server on my home LAN, specs are
MSI Z390-A Pro BIOS version 1.F0
Intel I5 8400
4x8Gb Crucial Ram CMK16GX4M2A2400C16 - Yes, it's 2 different kits, I know. It's worked flawlessly...