lost connection to server, but only on wired connection

[Warboy]

this is a strange one. when i use a wired connection straight to the router is looses connection to the server after about 2 mins of game play, but on wifi (same router) its works perfectly, the fire wall is set up the same for both connections, i have swapped the cables, and this last time i tried it i even had a film running in the background to see if the internet dropped out, it didn't, the only thing that stopped was coh, i have 500 mbs connection it is was constantly running at about 450, so speed isn't an issue, but wired connection is just not working ? any ideas?

[Marine X]

Do you know anyone with a Laptop with an Ethernet port that could connect it to your cable with Wifi off and see if it works for them. It sounds to me as though there is an issue with the wired connections on the router or the network port on the PC, it would help to narrow down the which one is responsible. Switch Port connections can be very finnicky some times if you unplug and replug the cable while they are active, also the wires/pins in the socket can gradually get bent inward causing a loose connection that can fail easily, you may be able to notice this visually. 

My Win7 laptop I use on older systems at work has this exact issue.