Routerboard 532 nstreme dual - help

I have this configuration:
2x RB532 with RouterOS level 5
4 x miniPCI CM9

Nstreme on first side is configured:
name=“nstreme1” mtu=1500 mac-address=00:0B:6B:36:BA:B9 arp=enabled
disable-running-check=no tx-radio=wlan1 rx-radio=wlan2
remote-mac=00:0B:6B:36:BA:BB tx-band=5ghz tx-frequency=5700
rx-band=5ghz rx-frequency=5500 rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps
rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps
framer-policy=exact-size framer-limit=4000

on second side is the same only tx-frequency is 5500 and rx-fr 5700.

In bridge1 is nstreme1 and ether1 on each side…

The link is up, but problem si with speed - max speed is 500kByte/s in one way. When I run download and upload in same time, it is as halfduplex mode = 500KByte is total speed.

If I setup RouterBoard to mode halfduplex = one CM9 on each side, speed is fine = 2000kByte/s…

I know, problem will be with cpu speed (330Mhz), but in nstreme-dual is maximum processor load 50%…

Do I have problem with configuration?

I thing, problem may be in TX-Packet rate, look:

Help please :slight_smile: