I have looked into adding "force fast charge" I am not sure if I will be able to implement it though. I will revisit it and who knows.Thanks for the Update! Running fine for now. I will need to test it for some weeks to see if reboots are gone.
One question: Is it possible to add fast charging support? On my old Ace 2 it was possible with following custom kernel: https://forum.xda-developers.com/galaxy-ace/ace-2-develop/kernel-ace2nutzer-kernel-20141027-t2920365