Wow that is really annoying damn...
So it was stated in the game that by pressing the "Tab" key, you can skip the fighting scenes, but the porter did not implement a tab key into the android port, so there is no way to skip the fights.
The only thing I could do to make sure I don't die is use the Implemented Mods (lvl10+, stats, gold). This doesn't help with the lag, but it does prevent u from accidentally dying.
The porter said this issues should have been fixed, but the only issue fixed was crashing during the fighting scenes. So the lag is the best it can get...I think. Unless they update the port again