I get plenty of CPU late start with my 8700K and RTX 3090 with 3000MHZ RAM. Tried upgrading the RAM to 3400MHZ for something else but it doesn’t make any difference to late start.I also suspect a software problem. My Win10 installation is also only for gaming, my daily driver is a Manjaro installation on a second nvme (dual boot). Apart from the game platforms (Steam, Origin, Epic Store), nothing happens on the side. Switching back from the beta versions also makes no difference. Windows and drivers are up to date (stable)
Here is a screenshot of my frametimes a few km from the asteroid field.
View attachment 207616
I think it looks a lot like your graph. maybe you would have to deal with the same problem if you weren't that far out ;-)
a test of you in an environment with more action (surface / asteroids) might look as bad as my first graph ... that would calm me down a bit
o7
A faster CPU might fix it but I think it’s a code problem rather than hardware.