CAPSMAN too slow

hello!
I’ve this conf :
ROUTER ADSL ---->RB1100AH (caps manager) -------> mAP CAP activate
|-------> mAP standalone

When i connect my latptop to the second one i’ve 13/13 Mpbs over the lan, but when i use the first one i’ve only 7/2 Mbps.
I think there is some wrong. Can somebody help me?
Thanks, David.

Do you have “local forwarding” configured ?