This is pretty off topic, but this reminds me of a weird thing that happened to me:<p>Over the weekend, I rearranged the furniture in my computer room in my home, and had just settled in to this new layout. Everything was working fine: my computer and my internet connection were all good to go. I booted up Counter-strike to play some rounds. However, the in-game server browser failed to find any servers. I closed the game and checked my internet connection: everything was fine. Maybe the master server was down? I went to bed.<p>The next day, I tried it again, and the same thing happened. No one else reported an issue. I tried playing TF2, and the same thing happened: all online functionality was nonexistent. It seemed like it must be a router configuration issue, but I hadn't messed with that in a while, and my games all worked fine last week.<p>I was able to play the same games on other computers without any issue. But as soon as I loaded up a game on my primary computer, I noticed the internet would go out for every system in my room. Maybe it was something with Source engine games? I tried a completely different game (some 2D indie puzzle game), and the same thing happened. Every game! The internet would go out, and turn back on as soon as I closed the game. It wasn't Steam either: non-Steam games did the same.<p>And it ONLY happened with games. Almost every other application worked fine. I was about to reformat, but I first tried booting into a separate OS on my computer and the SAME THING happened.<p>Finally, I noticed it failed with Unity and also with Photoshop. These programs all had one thing in common: they were GPU accelerated. How did that affect anything? Well, it only started happening after I rearranged my furniture. I had moved my router to sit on top of my computer. I moved it away by 1 foot, and then everything worked fine. It turns out, my laptop has Nvidia Optimus, which toggles between the discrete GPU and integrated graphics chip. When I launched a GPU accelerated program, my GPU would kick in, and I guess its operation emitted some electromagnetic field that interfered with my router.