I have a custom elf/linux distro.
Only the bear minimum to run steam and play native games (which already add tons of cr*p, 32bits steam client code, steam bash scripts... erk!).
My CPU, AMD Zen2, does get stuck in low power mode often, because I cannot get the right load profile to unlock it from that low power mode. I am testing with SMT off, it seems it does the trick: With SMT, it seems the spread of the load is so much efficient, cannot unlock! So I tried to "concentrate" the load with SMT disabled. It is not basic CPU usage but really something more.