its easy, on the general settings tab of TCPoptimizer, just move the slider to the advertised speed of smart bro then make sure that the PPPoE (below the MTU box) was checked, then click on the optimal settings on the lower right corner and finaly left click apply changes...
is your location near or far from a cellsite? I've heared that your Smart Bro connection gets weaker as go you farther from a local cellsite..I am just 50 yards away from a cellsite so I got the best signall possible..
if still TCPoptimizer doesnt help you.. I guess you should call *1888 using a smart sim and tell them you need tech support, tell them their service sucks! and call them names!