RTFMing the fast wireless charger doc and it states:
The flashing blue LED when I use the Anker QC3.0 adapter is an issue, for some reaosn even though Anker say their QC3.0 block is backwards compatible with QC2.0, the Samsung fast wireless pad doesn't like it at all.
Using the Aukey QC2.0 Turbo charger block works fine though and that outputs 9v @ 2A not 1.67 as specced by the Samsung adaptive fast charger block that comes with the phone.
The Anker QC3.0 block outputs 2A on the 9V line too, but 3A on the 5V.
This leads me to believe that the Samsung fast wireless pad is strictly 10W power output and doesn't like a block being used that has 3A on the 5V line even though it is using the 9V line at 1.67-2A.
The Anker I'm sure will be fine on a 15W wireless charging base as that requires a 5V3A input.
The Anker works fine via USB charging though.
The new standing wireless charging base must also be the same since the voltage and current specs are exactly the same.
So the only fast wireless charger that will charge the S7 faster than the Samsung fast charger is the new 15w Incipio Ghost ...