I wrote this post exactly for you @Baris_O
I used to use an intel macbook and it after 3 mins you could cook an egg on it running zwift, it eventually overheated my logic board and now i have an M1 MBP.
When you unplug the power the app is limited to 30fps and thats why it doesnt over heat as badly (using max battery saving)
Anyway, Hope that helps you out.