I have something of a solution. It seems to be that the game renders too many frames and has a need to catch up with itself in the form of the stuttering, where the game is finally sending you the most recent frame. I found that, if I set all settings as high as possible, my framerate was hurt, but the stuttering was gone. Contrarily, if I set all settings to the bare minimum, my framerate skyrockets, but stutters uncontrollably. The solution, then, is FPSLimit, which you can download
here.
You need Java installed to run it. Just extract the contents to a new folder and run FPS_Limiter_GUI.jar. From there, select Divinity2.exe as the application and set the max framerate to somewhere between 25-35 whichever yields best for you (I'm using 32). Select OSD if you want an onscreen FPS display. Click "create bat" and run the game from the .bat file. In-game, F10 toggles the FPS display, F11 decreases the max framerate, and F12 increases it. Hope this helps someone.
