Maybe guys theres a problem with your basestation, try to verify it through CSR if thats the case then you have to be patient when they restore it to good working order. Try the speed tweaks for smartbro(search it here in the forum, there are many post here that can answer your questions.....Be patient when testing this tweaks there are many configurations to consider to speed up smartbroken service....And when doing tweaks for testing verify your basestation if it is in good condition nevertheless you will be wasting your precious time in conducting speed test and tweaks...
I hope this will be a good help for you...Use cablenut and follow the 20 steps to speedup smartbro that you can find in the forum and use avast as an antivirus and turn off your firewall..
PATIENCE IS THE VIRTUE TO ACHIEVE A GOOD SPEED TESTING AND TWEAKS........