The problem persists also without access point or other.
Today insert CRS125 mikrotik in sostitution of the gs116 netgear.
Configure crs125, in auto isolate all ports and one horizon for each port, but never. I'm going crazy.....
The system configured in this mode:
CCR1009 in load balance 3WAN with failover, port 1 -> cable gigabit-> antenna PTP transmit -> antennna PTP receive -> cable gigabit -> CRS125. If connect any device in this switch, after 5-7 minutes, lost packets over 50%
...and the really strange thing, if I connect 1 of 3 my router, in the position CCR1009, all work perfectly