Whenever I play most multiplayer games such as War Thunder, World of Tanks, or Battlefield, I always get super high ping and lots of packet loss. For example, I am just driving one of my tanks in World of Tanks and my ping jumps to 999 and my tank glitches into the ground and then jumps to where it would have been after I stopped driving. Or in War Thunder, I am just flying around and my plane glitches and in half a second dives down into the ocean or crashes. This only happens on my desktop, not my laptop or any other computer. I have Xfinity and use wireless for all my devices. I even tried on a different network more than 20 miles away and it still happened. This never used to happen. It just started one day a few months ago and hasnt stopped since. Minecraft and Civilization multiplayer is fine though. Please Help me!