L2 VPN network slowness issue

Hello Everyone

I have configured L2 VPN in VMware vCloud platform where L2 VPN between two different DC via 1 Gbps MPLS link.

As we are facing network slowness issue between Dc’s via L2 VPN(network speed max usage is 200 Mbps),However using same MLPs, when we do test of vms between DCs, without L2 VPN, we see good network performance/complete bandwidth  utilization

Note: Edge gateway version is 6.3.6

So is there any know issues causing performance/limiting bandwidth usage over L2 VPN? Any configuration issue ?

Please some one can direct me in right direction

Thanks in advance