For what I have seen, the smartbro users are constantly trying to get faster speeds. ( just as the rest of us are lol ) There are many variable involved. One would be how far away you are from the station, and how many users are using it.
Due to my limited knowledge of the smartbro network, I would not be much more help to you.
Allow me to suggest using the " Site Search " google it bar in the header, if you search this for smartbro, you will be presented with the many different threads here on testmy.net that the smartbro users have going. Post your issues there, and I am certain when a smartbro user sees your post, they will work w/ you to get the best connection you can in your specific area.
Again, you don't have to call me sir, But thank you. Just be patient, and try your best to absorb what the rest of the smartbro users have said, and will say to you. While your waiting for your answers, just search around the site, I bet you'll get more information then you can imagine .