Bridging and Bandwidth Management Problem

Please can someone advise me on the following problem.

I have a simple 5.8ghz bridged link between 2 MT 532’s using WDS which is working fine. I want to bandwidth manage all data between these two devices to a maximum of 2Mb in each direction.

I have applied a simple Queue to the station-wds device limiting traffic to 2Mb in each direction and this appeared to be functioning correctly. I now appear to have a problem where traffic is flowing on the link but is not being seen by the simple queue. The traffic through the queue is 1-2Kbps but traffic on the link is 800K.

The configuration is as follows:

Unit 1 AP-Bridge
ether1 192.168.3.4
Bridge1 = ether1+wlan1+wds1
WDS Mode = dynamic

Unit 2 station-wds
ether1 192.168.3.5
Bridge1 = ether1+wlan1
WDS Mode = disabled

Is this problem being caused because of the IP address assigned to ether1. I have traffic from a variety of IP subnets flowing through the bridge. The 192.168.3.0 subnet is just there for management purposes.

Any help welcomed

you can set limit to the wireless client, both roueters are MikroTikr routers:
default-ap-tx-limit
default-client-tx-limit
http://www.mikrotik.com/testdocs/ros/2.9/interface/wireless.php?permalink=0.08652099583288812