There seems to have been some (stupid) change to the Linux kernel, where the CPU are stymied to a low power setting.
running cpufreq-info I get:
The governor "ondemand" may decide which speed to use
I see that I can change one core like this:
sudo cpufreq-set -c95 -g performance
But how do I set ALL cpu cores to PERFORMANCE permanently (persist across reboots)?