Was like everyone else having drop connection after 5 or so minutes of game play. My router is a NETGEAR WNDR3700 which I'm hardwire to it and my son is by wireless, after playing around with every possible setting with no avail. I decided to check firmware update from NETGEAR, looky looky a update was available and issue related to drop connections. After the update, I am able to play multiple games without issues and so is my son system.

Hope you have the same results.

At first when I saw your post, looked up, saw my Netgear WNDR3300 that I'm hardwired to I was like . Than I checked for an update and was like D: From the sound of it though, your problem wasn't just related to Crysis2. Although anyone with a WNDR3700 probably should check for and update if it fixes stability issues.