So TheBluel, I was having the same trouble you were having, Everything you listed that was happening was happening to me. Thought it was only Gw2. I went and played another game, and it happened there too. So started trouble shooting mode. Found out my Ram timings were completely off. I set them correctly and so far so good for me, Still a little to early to tell if it cured me completely. but give it a try. See if if they’re off.