Big problem Etherwan Cmm4

My company used many Base station 430 with CMM4 and i have problem switch etherwan. Swich not answer on port 80 http and not connected telnet. If reboot cmm4 all work but after some time etherwan again not connected. All etherwan switch in configuration have about 150 vlans. If switch have 10-20 vlans as connection stable but if switch have more 40 vlans as connection very long and add create new vlan during about 1 minut.
I test create vlan on telnet but after send command “vlan 100 bridge 1 name 1” I wait 1 minuts til get recieve answer.
When Ethewan not answer all data throught etherwan good work and ip address etherwan swith stable ping - but i not have access port 80 and telnet. After i restart etherwan and anything swith (1 week) worked but after i have againg it is problem
PLEASE HELP ME. I TIRED GO TO BASE STATION and restarted CMM4.

One of the many reasons we stopped using cmms and started using juniper mx210 routers with sync pipe poe+time injectors.

Each of our aps are on unique subnets.