Stutter happens for me when gpu's load suddenly drops for a split second. It doesn't matter which graphics setting I choose nor does it change anything when maximum performance is chosen for cpu/gpu in windows setting. This is happening on a newly installed win10 pro, same thing that happened on windows 7 pro. Maybe others are not as picky and don't notice split second stutter, or just consider it as hiccup related to internet based mmo game. As no other games on my system, including mmo games exhibit this kind of sudden frame rate drop, I firmly believe this is a game issue.