Just installed 3 AP6-PROs to replace some very old WAPs. It was in a high-rise in Chicago, so there was a lot of interference. The cell signal in the condo was not very good either, so the customer relied on Wi-Fi calling. Initially before I fully setup up everything the customer was complaining about drop calls when moving around the condo. I turned on the “Fast Roaming” feature and mid call everything got better. The overall Wi-Fi quality was great, and the roaming was awesome.