O3DS 9.0,It doesn't have anything to do with your Internet. Anyway, what was your average by the end and your setup?
Channel: Auto (Current channel 1)
Mode: 11bgn mixed
Channel Width: Automatic
Max Tx Rate: 150Mbps
I tested the average speed sending another game and it was was 986kbps (weird considering that it was 1300-1700 everytime)
I honestly didn't change anything more than the buffersize to 256 kbps.