Most people claim they don't even work, but I've tested them on a deeper level and it actually works just as advertised. They're vaguely described, but they DO work.
I'm gonna explain what I found:
Fast tap response: You can find this from the sidebar < performance settings < enhanced touch. (Process varies depending on Security APK version)
It increases the touch sampling rate from 166-250hz to 480hz. This is useful for very precise games like Geometry Dash. You can see the difference in the screenshots. It basically reduces delay from the moment you touch your display to when the phone actually registers the input, the difference is VERY minimal but useful for competitive games.
Some of you might already know that. But I bet you haven't tested the "touch control slider". Some don't even know it exists since it's hidden away in the game turbo itself. (See third image)
Many people say that these are useless, but you can actually feel a difference when you're playing very precise levels in some games.
For example, I tried Geometry Dash's custom level "bloodbath" which uses the ship gamemode a lot, and it's perfect for this test. When the values are higher, the phone registers even the smallest taps (taps that last shorter than 15-30ms) and treats them the same way it would with longer hold times.
This can make the ship gamemode feel way lighter in geometry dash which is a disadvantage in very ship heavy levels like bloodbath. Using lower tap stability and touch responses makes the phone ignore taps shorter than 20-30ms which makes the ship feel unresponsive at times. You can get away with overclocking on straight fly sections easier, but sometimes you will need that precision more.
I shared the most optimal setup for me. I hope this post was useful to someone out there. I will keep looking into how it works on a deeper level since my phone is rooted, so I may drop some updates later.