QoS using queue simple problem

Hi all,

We have 2 mikrotik box; the first one using DOM with MT 2.9.6 and the other one using RB230 with MT 2.9.27

on both version of the above MT, we already define the queue simple like :
“name=“customer 1” target-addresses=192.168.3.0/29 dst-address=0.0.0.0/0 interface=ether3 parent=Corporate Customer priority=5 queue=default/default limit-at=16000/16000 max-limit=64000/64000 total-queue=default”

The problem is… customer still able to use bandwitdh more than 100Kbps if using MT 2.9.27, but when using MT 2.9.6 the bandwitdh max is equal with defined.

does anyone seeing the same QoS problem like me ?

Paul