https://phys.org/news/2018-08-wi-fi-traffic.html

"More APs in the same area mean that Wi-Fi signals overlap with each other, lowering the overall bandwidth," explains project coordinator Prof. Qi Shi. Additionally, APs configured on the same channel interfere with each other's traffic. In Wi-5, APs become intelligent networking entities. "This is a classic case whereby everyone tries to get the greatest benefit from a shared resource," he says. "But, as demand overwhelms supply, each individual who consumes directly harms others until no one can benefit."

Tools to enhance Wi-Fi coordination