Yes, it's a disaster. The phone overheats extremely quickly, video recording is jerky, apps just close, hotspot no longer works etc etc. I haven't found a solution - I'll probably have to buy a new mobile soon... Maybe it helps to take the mobile out of the cover?

I know the problem too. Taking it out of the case helps, but I find this very unsatisfactory!

Yes, I have the same problem. Nothing helps except switching off and waiting for it to cool down.