Whenever I install a new ROM, I think "ok finally I can stick with this ROM cuz it is awesome", but then inevitably the 2 week lag hits and the phone slows to a crawl. Browser starts freezing, everything starts lagging to the point where it becomes unusable, basically the whole phone slows down to the point where only a factory reset and installation of a new ROM fixes it. I'm sure there's an easier way to make the phone go back to how it was when the ROM was first installed.
I've tried cachemate, but that doesn't do much, I've tried rebooting, that doesn't help either. What other methods are there to keep the phone running smooth after the initial 2 weeks on a new ROM?
People who've "never had a problem with an android device ever in my life!!!" need not answer.