I have a 86U that I've had for almost 2 years and for the most part it has been great. I have 1Gb Verizon FIOS and wired I can consistently get around 880/930. I have a few 3-4 stream AC wireless pci-e adapters from various manufacturers (Asus, TP-Link and Rosewill) and when I perform a local file transfer test I can get 650mbps speeds from three different computers (wireless client from wired source). This is about what I'd expect at ranges of 20-35 feet. Here is what I don't...
RT-AC86U anomaly
RT-AC86U anomaly