I started getting some worrying behavior this morning after a couple weeks of good performance:
Sleep is disabled on my workstation. Left the computer on at the studio yesterday after a long work day with zero issues. Came back this morning and the system and UI is unresponsive to the point of being unusable.
See this video to see what i mean:
Notice how even though the cursor is free, the dock stops responding to its movement and the app icon stops its bouncing. Apps that take moments to load are taking up to a minute.
Not sure what the cause might be. Haven't installed anything or changed any Clover or UEFI settings.
UPDATE: Unplugging Ethernet (was plugged into smalltree port) seems to have fixed it? FWIW I was having connectivity issues yesterday but I think they were caused by the switch/WiFi hotspot in this room. I've switched to the bottom port for now, though I do get worse network performance with it.
Memory is Corsair Vengeance LPX 2400MHZ. I'll try to remember to leave MemTest running the next time I'm away from the studio, but I never had trouble with this memory for over a year using an ASUS Z370 board. In the meantime, I have to get work done today so I won't have time to troubleshoot until evening I think.