Thanks for testing and for the feedback. As you say the stuttering is likely an issue with certain combinations of hardware (my CPU is rather old for example) but that flag seemed to have completely fixed it for me. I tested it with 8QxAA + 4xTrSAA + High quality AO (an extra setting above the normal one, set through NVIDIA Inspector) as well, VRAM usage was around 1.3 GB, and it made the game noticeably smoother and, thus, more enjoyable to play. While you're here (I hope you still are!) is there any chance of NVIDIA adding a fix for The Book of Unwritten Tales please as it is the ONLY game I'm come across that doesn't like SLI even when it is forced to Single GPU in the profile I've made. Basically most of the menu text is rendered invisible with SLI systems and the only way to get it to appear is to manually disable SLI in the control panel. I've told the developers about it and they've said they'll look into but couldn't promise that it would be fixed. However, I was wondering if there might be a flag or something that would make the game think that SLI is completely disabled without it actually being disabled if you know what I mean? Thanks.