Wow, that sounds incredibly frustrating! I've definitely had weird internet glitches happen with certain games before. It almost sounds like the DayZ server refresh is flooding your connection. Have you tried limiting the number of refreshes you do in a row? Maybe playing something less network-intensive in the meantime could help diagnose if it's DayZ specific. If you are looking for a single-player game to relax, you can also try Drift Hunters, it is simple and fun. Hope you get it sorted out!