What can be removed from Android Tablet? I was recently given a roverpad tesla 10.1 tablet :

(https://www.imei.info/phonedatabase/16842-roverpad-tesla-101/)

It is total garbage as a tablet but I would like to use as a controller for a mini robot via an android app (via bluetooth). So in order to get a better experience I would like to remove all the unused features (multi apps ? multi screens ? logging screens). 

Right now even after doing a 'one click root' = KingRoot (but it is not a total root, so I can delete apps but cannot change the OS) and deleting all the non system apps from the tablet it is still quite laggy (but battery life is way better).

Would you have some advice on how I can optimize it for one single usage (running an app to control a robot via bluetooth) without routing it (well if someone knows a way to root this poor soul, that would be quite awesome).

Thank you in advance,

Artiom
You can gain root access depending on your Android version using various methods on that device.  

Try these first,


FramaRoot Application
TowelRoot Application  

Then, only if they failed !
KingRoot 4.9.6 Application  



  Kingroot will root %99 of Android device's running below Android 5.0, however it is annoying to remove it, that's why i suggest FramaRoot first.