TR_simpZI will try disabling Battery -> Background app management and see how it goes.
The AOD has some delay. I have disabled all battery and power optimization features but using Dynamic mode. I will give the High performance mode a try and disabling OptiFlex in the future when I have the time.
I think the app drawer ease-of-use is limited because it is close to stock Android. I'm coming from Samsung and it does feel very backward but this area is subjective as many others prefer the stock Android experience.
"Settings - Sound & vibration - Vibration - Touch vibration" will disable vibration when scrolling to end.