day 3 working on this and still can't get above 170mbs. CCQ unstable and modulation keeps bouncing to different rates. Anyone else got these working stable?
Did you scan for other 5.8GHz device which might be operating in the area? Not yours, devices belonging to other people. 80MHz of clean spectrum is very hard to come by around here. 20MHz of clean spectrum is hard to find in that band.
CCQ and modulation bouncing, barring hardware or software defects, tells me you have noise. I would look at the scanner and frequency usage tools. RX signal levels too strong could also count as noise.