Smart antenna disconnected on load

HI, on load (~ 80-100 mbps Throughput) smart antena start disconected  ,performance smart antenna disconnected  show 50000+ times. Clients have 20% retransmision. Update and downgrade don`t help 
.Change joints  also dont help . Replace witch another AP all work fine. When test Ap  with one sm all work fine

Hello jeroslavrou,

That is weird. If the apparently defective unit is still under warranty, please submit a ticket with Customer Support to request a RMA. Sorry for the troubles.