Hello, I've had an issue after replacing my battery with a 3rd party one where the processor would slow down to 0.8Ghz. I ended up fixing the problem (by plugging in the new battery while the system was running powered from the charger) but now I was thinking, is there a way to force the underclocking of the CPU? I've noticed how when I had the issue, the mac was using way less energy before I realised about the lagginess. Which means I can still use it normally for easy tasks and extending the battery life quite a bit.
I've already tried turbo boost switcher but that does only limit the CPU frequency to 2.8ghz which is the stock speed and still capable of using quite a bit of energy.