Game crashing, low FPS, and restarts itself when closing app

I have the same issues on my S22. The game also makes my phone get really hot, to the point that it's uncomfortable to hold, and uses a ridiculous amount of battery power. The morning after the update I used 20% of my battery playing for less than 15 mins. 

I've tried to raise a ticket in game but it runs so slowly that the keyboard doesn't even pop up to allow me to type anything. 

The game is basically unplayable at this point, already lost 1 round of GAC because of it