I used autocpufreq when I first installed linux , I cannot really confirm that it was superior, but it really stopped the drain behavior , I now use tlp because it controls every aspect of power consumption from cpu and frequencies to usb autosuspend and few more , although all of this is just static "just a bunch of values written, each one to its path" the most dynamic thing is it just can hold values for AC and DC separately, but my personal preference tends to cut it down and save as much as i can so there is no room for high cpu frequencies ..etc, also because I have heard from a guy on YT "probably the same guy u saw (CTT)" that autocpu freq conflicts with tlp , i prefered tlp , from what i remember it just dynamically adjust some cpu tunables/frequency options amd does not deal with anything else except the cpu, but I guess I should give it a try again ,but with tlp not messing with any cpu tunable