Thank you for your answer. Yes, 1GB Ram, restart doesn't help in any way. So it's probably not enough RAM.
Never mind. I hopefully get a different device next week with 2GB RAM but running Android 4.2, let's see if EK is working better then. :D
First, I'm using an old HP touchpad with unofficial LineageOS build (Android 7.1.2), so I'm surprised the game is working at all :D
Nevertheless I wanted to ask here, maybe someone knows a way to fix this, other than waiting for a new tablet. As mentioned before when entering some (well, a lot)...