In short: No, there's not a possibility that there's something wrong with the electrical feed or some kind of radiation slowing your computer down. Based on the details you give it's difficult to say for sure, but it sounds like you're playing games online, in which case it's probably your Internet connection slowing things up.
Hi! I tested like five different computers and four monitors and all of them behave the same way. I replaced all components, peripherals, different OS, 32, 64 bit, drivers and it make no difference at all. Graphics microstutter and I lag because of that in singleplayer and on the net. I play quake live and minecraft. Is it possible that there might be something wrong with electricity or some kind of radiation that slow my computers down? I feel like my whole computer is skipping somehow. My fps is on the max but it drops constantly and very fast so it's very difficult to aim and move and it produce lag. Everyone can destroy me. Games are pure frustration.