There was a change in clr-power-tweaks that went in at the end of October to select the performance setting for servers, and powersave for everything else.
I don’t know why you saw it flip back to performance in December, although there was a brief period a couple of months ago when we had to fix a crashing bug in clr-power-tweaks.
If you want to permanently switch to performance despite the CPU identified, you can check out the man page
man 5 clr-power-tweaks
or just copy and paste the following line into /etc/clr-power-tweaks.conf