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First thing you should do... hook your modem directly to your best computer. In this case your Toshiba win 8.1 laptop. Hopefully your laptop still has ethernet. Unplug the power from the modem for about 10 seconds and plug it back in. This will cause the modem to get the mac address of the computer instead of the router... if you just swap the ethernet cable over to your computer it won't work. Test again. These results should represent your absolute best possible speed because you're taking the router out of the equation. Less in the way to go wrong. Let us know what you find. In December you hit 53 Mbps... ...so you may have more speed in there. Maybe poor router placement could be to blame for slower speeds. After connecting directly to the modem directly connect to the router with ethernet and see what the best speeds are off the router, taking wifi out of the equation. Basically work down the line, eliminating and then adding back variables and if adding something back causes the speed to drop... you have your culprit.

Hello, I am connecting cable modem service for the first time. There are many different cat5 connections inside my house. The one the cable installers connected it to was pulling 60Mbit/sec after installed. It was an inconvenient place for the modem, so I moved it to another location. Inside the cable box, the outside line comes in and attaches to one coax cable via a coupler, no splitter. I removed the wire that it was attached to and connected the coax that lead to the part of the house where I wanted the modem. I reconnected everything at it works fine, except the speed is cut in half. I can pull 30, 35 on a good day, Mbit/sec.. half what it was getting at the other location. When I move it back to that location it goes back up to ~60. With the tools I have with me I don't have a reliable way to measure the resistance of the entire length of the wires. I'll have to go get that tool from my storage. The connector on the faster line is *slightly* higher quality/newer but the cable is identical. They are both solid metal on metal connections, however. This is a new house with all new wiring made within the past 10 years. I am a pc technician but I don't do a lot of stuff with cable modems in terms of initial install, I handle mostly PC hardware/software and network infrastructure issues. Anyone have any ideas of things I could try? Thanks in advance for any advice. *Signal info attached*