Fast Charging Stopped?

Got my Note 5 with the adaptive faster charger about 3 and a half weeks ago. On my second Note 5 now (had to send the first one in due to problems) and everything was working fine until a couple of days ago. I would notice my phone saying "charging" and then I would have to unplug and plug it back in then the "fast charging" would appear. Now it doesn't ever go into "fast charging" and no matter what I do I always get "charging". I currently have 93% battery and it is telling me 15 minutes until full which seems a lot slower. I tried using my old Note 4 fast charger and get the same issue.

Anyone else with this issue? Wondering if it's the phone or actual charger and if there is anything I can do to get a replacement.