I can’t say much about about tlp as I only have AMD desktop systems and most of the power management is turned off
I use the ‘performance’ governor some of the time, but only when I am running a big project in JACK. Changing governor used to be essential with JACK, but the governor does not seem to make much difference if JACK is running a simple workflow
MX is using cpufreq for frequency scaling and ‘ondemand’ governor. And MX uses sysvinit instead of systemd so they are not likely to use cpupower like Manjaro instead of cpufreq
The ‘equivalent’ intel_pstate governor to ondemand would be performance
CPU frequency changes dynamically and would maintain a higher frequency than powersave when system load requires it
cpupower is configured in /etc/default/cpupower to use performance governor
but the systemd service cpupower.service is not turned on
(I suspect this is to avoid problems with noisy fans or high temperatures on older systems - MX forum does get an occasional complaint about those issues)
this command is all that is needed to turn on systemd service
systemctl enable cpupower.service --now
but there is also cpupower-gui in AUR which can probably deal with all of this GUI if you prefer that
If you want CPU locked to high speed you can edit /etc/default/cpupower to comment out the governor and use freq= setting instead
but you should have tools to monitor CPU and system temperatures if you want to try it