Interesting. That's the same iperf3 behavior I have experienced on my small network of three Motorola MM1000 adapters. I can get over the 800 Mbps bonded 2.0 rates with iperf3, but the connection has to be saturated. I was wondering if that would be the same situation with these units...
Uploaded yesterday- started experiencing frequent iOS dropouts on the 2.4 GHz band, for both iPhone and iPad- no joy when toggling "Smart Connect" feature. Rolled back to 1.0.2.46.