Or in-short, play stuff that has high object count and high OD (as long as you can get good ACC on high OD)
I mean a 3* map 99% ACC FC on a 2400 note object at OD4 would be still worth 150PP. Length bonus is insane in Taiko especially at low levels. If you miss 1 or 2 times it doesn't matter too much as it only reduces 1% of PP per miss.
Put DT on maps that are ~1* lower than what you usually play.
The higher OD caused by applying DT makes the pp system give you more pp because higher accuracy becomes difficult to get.