> iPhones, iPads and MacBooks would not switch to another AP
About a decode ago when debugging networking issues in an office, we had the observation that Apple hardware holds onto access points for dear life. Everything else would roam fine, but Apple would stay connected to distant access points with awful signal as if Steve Jobs' life depended on it.
That behavior has changed a lot in the past decade. Apple actually documents their roaming thresholds.
The signal has to drop below -70dbm for ios and -75 dbm for macos for the devices to consider roaming. Additionally, the difference between the two AP has to be 8db for ios and 12 db for macos.
IMHO, these are good defaults. Apple devices are optimizing for stability over the “best” possible signal.
What you might consider awful signal difference between the two APs might not be. (e.g. a mac device at -75dbm need to find another AP with -63dbm or better.)
About a decode ago when debugging networking issues in an office, we had the observation that Apple hardware holds onto access points for dear life. Everything else would roam fine, but Apple would stay connected to distant access points with awful signal as if Steve Jobs' life depended on it.