I've had that happen, the trick is to place them on the other side of large metal objects (like in rooms behind fridges) or with as many walls between them as p

I've had that happen, the trick is to place them on the other side of large metal objects (like in rooms behind fridges) or with as many walls between them as possible. It really does come down to placement and how many Wi-Fi hotspots your neighbours run. It's theoretically possible that your 3 Wi-Fi hotspots could run at channels 1, 6 and 11, and try to pin devices to each channel, while still working in one room. But if you've limited Wi-Fi spectrum available, adding more APs isn't going to help things unless they're carefully tuned to transmit with less power/interference.