Network Device, possible intruder

Everytime  I log into my friends campaign, a new network device pops up and then the massive lag happens. Doesn't seem to affect anyone but me, my other friends doesn't seem affected by this. Any ideas of what might be going on?

Going to need a lot of info about your pc to help that one I think.  What OS?  Can you get any details from the pop-up?  I'm a PC tech by trade, and I'd be willing to help troubleshoot if you don't mind me remoting into your system.  I use teamviewer.  I'll of course help all I can via these messages boards too, but I'm very visual so the remote would save a lot of time.

thanks i will try my  best to provide the info you need  OS Pop-up! i can see it on the network map but not in my router manager Network Map  ,  Router and for the Teamviewer, do i need to get something for it to work or do you just need information on my computer?

Go to teamviewer.com, Download it, and install (or just run) and PM me a time we can get together. That is interesting, as it's a diff mac address and everything.  

Riley D. said: Yeah, this is odd. It really only happens when you get in-game with Roll20? Only thing I can think of is it's either something to do with Flash (if you're using the built-in Tokbox video) or maybe the Google+ Hangouts video chat plugin (if you're using Google Hangouts)... i don't use neither. All i did was log into the campaign and the device just pop up!