Not sure, upgrade your ISP plan or buy a fast ADSL2 router?
If your speed test says 126, then LW will only get that amount or less unless you get the bandwidth from somewhere.
You said you have a few computers running. Perhaps they are stealing the bandwidth. Also depends on your ISP plan. Some ISP's give separate upload speeds, some DSL plans are tied in with download bandwidth so if download is using up all the bandwidth, not much left over for uploads (similar to how dial up bandwidth works).