What (possibly) there are restrictions or recommendations for system configuration on 4 (5) APs of the RouterBOARD wAP 2nD AP (installed “in line”) and about 40 devices (Android smartphones).
The primary system configuration was based on RB760iGS (may now be replaced).
The whole system is planned for working with sports (entering results in the client program on smartphones and transferring them to the referee server for calculation and processing).
The first option (refused) was based on CAPsMAN and a seamless pattern.
A currently used is "separate" system (different channel`s and different SSID for all АР)
But the system works differently in different locations (relatively stable or very bad).
Settings (in Mikrotik device`s) not changed, "client`s" devices the same all the time.
All client devices begin to transmit data at the same time (approximately every 5 minutes) - the rest of the time they are in "ready" mode.
Distance from AP place and Android device max 25 meters (but usually 2-5)
In post attachment device with Red "border" = not connected, Green = connected to any access point, (priority over the nearest)