Take a backup and perform a factory reset. After setting up the Tab, don't ever turn on protect battery feature. It's weird on the Tab S7+ but somehow great on a galaxy phone. I don't know why is that so... Do these steps and you will see some improv...
https://youtu.be/pcJSyZ2-nwk Don't forget to take a backup and go to developer settings to turn on OEM unlocking, USB debugging. Rest everything is there in this video. I used Europian software build. The process is super easy, just be patient.
