

glxinfo | grep Vendor
Vendor: Mesa (0xffffffff)
Yep, you’re using software rendering and your extremely fast GPU is sitting there idle. Talk to System76 about enabling the correct driver.
(That was obvious from the initial “0-10 FPS in KSP” symptom, of course – even my 7-year-old AMD GPU, a Vega 56, can run that game just fine, and I’m pretty sure the AMD GPU I had before that could too.)
“Ew” what? The fighting over MBFC was a big deal for a long time. If he was here, it’s hard to believe he wouldn’t have noticed it.