Epmp 4500 and F325

hello guys,
I’ve a DS problem with 4500 AP and F300 clients.
all still works in SS downlink and DS uplink.
Its a firmware problem? (all is in 5.9.1)

thanls in advance
NR

Hello @netreality,

could you reset statistics, execute 20sec wireless link test 3 times and send me techsupport files from AP and 1-2 SMs having this issue?