Use this configs on hKtweaks see if it helps. The problem is that the CPU is interactive but mostly runs at high frequency all time. Just set the governor to blu_activeFlashed v2 yesterday and I've noticed my battery is dying very quickly. If I'm using the phone it drops 1% in 1 or 2 min of light usage, during the night it has lost 10% even if hktweaks says ~8 deep sleep. I was using hades pie 11.1 previously and it was a lot better. Any tip?
Edit: it's warming up just by using Samsung internet