I've since left the 4.13.0-38-generic kernel + 3.20180312 microcode + apparmor=0 option running for >30 mins (top constantly running plus a short compilation using all 4 cores in parallel, make -j4, of a github download).
It still looked OK.
I've since left the 4.13.0-38-generic kernel + 3.20180312 microcode + apparmor=0 option running for >30 mins (top constantly running plus a short compilation using all 4 cores in parallel, make -j4, of a github download).
It still looked OK.