[Q] Doesn't always fast charge?

Does anyone else have an issue with fast charging? I am using the original cable/charger that came in the box and I have to unplug/replug it in anywhere from 2-6 times for it to register as fast charging, sometimes more. I have also tried using the charger that came with my Note 4, same issue. Tried using a different wall outlet, same issue. I noticed a thread on Android Central references this same issue but as that is not purely T-Mobile brands, it's hard to gauge where the issue comes from.

Anyone else experiencing this?