I'm getting this too. Tried to setup and older version of NodeWebkit as a custom browser and that didn't work. My game looks really choppy right now and it was fine before the update.
Develop games in your browser. Powerful, performant & highly capable.
JJEvil
Jerkiness only in NWebkit,Chrome,Firefox but not in IE, I try switch off Vsync in VideoCard setting, but nothing.
So... is there something new about that?
I downloaded the new version of node based on chromium 41 and, yeah.. it's better.
But remains a 'random' jerkiness... I think it's being gradually fixed. lol
This should be fixed in the 0.12 alpha, or by the final version of 0.12, so closing for now.