Stuttering is an issue after the latest patch. If it isn't patch related you can try to edit a couple of lines in the usersettings.txt file. The following two lines of code are usually set by the game as "-2". Change both to "0" and see if that helps
SET RequestedNumJobThreads "0"
SET RequestedNumWorkerThreads "0"
Stuttering can be caused by graphics settings, Vsync, view distance and many other settings in the game and on your video card. The above code is a known cause of stuttering so start there and see if it helps.