s6 edge uncommon fast charging issue

[AC Question]

guys,i got an s6 edge and it needs 6 hours until full charge i tryed all common solution like changing cable and the whole charger with another original one but still same,when i checked the setting i found the fast charging option turned on and when i connected the charger it auto off and no ability to turn it again until i take out the charger,could anyone help me or suggest me to do something please?