I'm getting stuttering in FC4 with the 344.11's from September - 780GTX, 4790K & 36GB RAM. Performance isn't as good as it was in FC3 by a long way. Still more than playable but appears to vary between 30-60 - rather choppy. As if triple buffering is off despite the in-game control panel giving that option. Is it worth my while going up to these - will I get a noticeable improvement?