Did you know that most people don't have any clue what day of the week it is? And in our 40 character world, full of sound bytes, 2.5 second attention span twitches in our video and TV world, that people cannot even fathom the ability to answer a question, with an answer. The reason you aren't getting that level of service is because of one of two things: 1) You aren't paying for 100Mb service; or 2) or that level of service is just plain not available in your area. It doesn't have anything to do with your computer being full, or any of thatshit. The line into your house to your modem cannot be split, nor can you split it from the wireless router, without there being a drop in speed. But chances are 100Mb just plain isn't available in your area. CenturyLink advertises some crazy 1Tb or someshit on their website. The DSL lines in my town can only max at 12Mbps. Direct connect the cable to your computer, it prolly has an integral modem. If not, hardwire the modem to your computer. The speed test from that point will tell you the speed you are being delivered.