Application Control & Traffic Shaping not working!?

Hello,

I am having an issue with a Fortigate 200D (v5.2.3,build670 (GA)) as I can't traffic shape (and throttle down) Aspera application.

Let me be more specific and explain the situation.

I have a 200D which has a 100Mbps WAN connection and 4 VLANs in it.

I have individual policies for each VLAN that allows them to go to the WAN.

VLAN 983 has a traffic shaper in the WAN policy that allows a MAX bandwidth of 75Mbps

Now VLAN 983 is using an application called ASPERA which is a UDP file transfer tool.

When they create a session with the remote server and start a data transfer, the WHOLE 100Mbps of the WAN is used leaving all other VLANs without internet connection.

I have added an Application Control Policy on top of the existing WAN policy that gives ASPERA 45Mbps MAX but that does not seem to have any effect...

I can see the traffic from VLAN 983 is limited to ~42Mbps but the WAN traffic is still over 85Mbps...

All other VLANS combined used around 3Mbps bandwidth at the time of the screenshots.

In addition, FortiView shows that it has identified Aspera and the shaper is in effect but the WAN utilisation is at 85% +

Any suggestions on how to enforce the shaper on the WAN and actually use 45Mbps MAX when Aspera is in use?

Thank you in advance,

Thanasis