Disconnect on Party, Interpoker (router issue?)

[Asgrow13]

So a few days ago I played my first MTT on partypoker and found that every 5 minutes or so, the action would freeze up for like 60 seconds, then an entire hand or two would be played out in a split second and the action would jump to me. Then last night I was playing on interpoker and the same thing was happening. Seemed like I kept getting disconnected and then after a while I would connect back to the server. I have a cable modem, so the internet connection is solid and fast, but I'm running it through a linksys router which I'm thinking could be the problem. Is there any chance that a router would cause this to happen, and if so is there anything I can do to prevent these common disconnects? Are there ports that can be opened/forwarded to make this work better? Thanks.