10-15 FPS on 3080 purpose-built PC

Just got a hotfix. Same version number, 128ish mb. MSFS went dark in a window on the update and just hung there, page shaded dark, music playing, but hung. I eventually killed it with task manager and restarted. Didn’t get any updates on the “Checking for updates” page. Ran at exactly 10fps with my normal 4k mix of high and ultra. Got a wopping 13-15 fps at the all low preset. Out in the sparse desert, empty community folder. This blows.

Maybe it is time for a fresh install. What a royal pain in the rear. Irksome to say the least.