i have problem with badwidth control feature , my actual speed on the line is 30 MB when i enable bandwidth control even before i make any Control Rules the speed is reduced to the half and become 15MB  but still showing up 30MB in the status of Dsl , but the actual is 15 only . if i make any Rule to control the speed i can't take my full speed , only 15 MB i can make for all devices even if i write the full speed in the rule for any device what will reach is 15Mb only , if i want to back the full speed again i must disable bandwidth control feature .

Any help on this issue?