I don't have any idea if in others Divinity 2 editions you have stuttering problem, but with the Spanish one I'm getting the most painful stuttering that I've never had in any other game. I'm sure that the problem does not come from my Nvidia GTX275 and a E6600 with 6GB RAM and I have to say that I have high FPS rates but I also realize that the more FPS I have, the more noticeable stuttering I get so have put a FPS limiter to set max FPS to 30, but the stuttering is still there anyway, less noticeable, but there it is, and it's really annoying so I will stop playing this game until next patch been released, so I have put all my hopes in the incoming patch, so please Larian, take a look to that problem because I have checked the forum and it seems that I'm not the unique person who has those stuttering problems.
PD: I have never had stuttering problems in others Gamebryo's games like Oblivion (with my old 8800GTS), Fallout 3, Warhammer Online...
Its a known problem, suposedly fixed in the most recent german patch version, but i cant confirm since i dont have it. If you have spanish version then its normal should be around the same English EU version, wich has that problem.
As explained in this own thread by lar_q, diferent patches in diferent languages have diferent improvements so we should all wait for the next patch that will make all the improvements into 1 single patch for all versions/languages.