I have Comcast (Xfinity) cable and if I plug directly to the modem I get download speeds of 20 Mb/s. When I am plugged into my router (wired), my speed drops to 2.1 Mb/s. My router is a Cisco Linksys Wireless-N Gigabit Router (Model WRT310N V2).
I have another desktop that I connect to the network with wirelessly, but the tests have been conducted with that computer shutdown...if that matters in any way.
I would appreciate any help in resolving this issue, thank you!