Update: I have narrowed the problem to the bridge on the station access point. These bandwidth tests all report fast speeds, some near 300Mbps: AP --> Station (radio link) Station --> AP (radio link) AP --> connected switch (ethernet) Station --> connected switch (ethernet) Station --> AP --> switch...

I am experiencing something very similar. I have two SXT AC units about a 1km apart. RF stats are healthy, I think (-49db signal level, ~53db SNR), and CCQs are in excess of 90% during testing. My link shows hitting similar data rates as the original poster, about 400mbps or higher. However, UDP spe...