I had to finally update node webkit from 10.5. When I upgraded to the recent r209 update, I was getting fairly consistent crashing before the game would start. It was annoying because my game takes around 45 seconds to load, and these crashes would occur right before the game started.
Anyway, I updated to the latest node webkit. I can't say I'm really happy though. I mean, the crashes stopped, but for some reason it seems locked at 59fps instead of 60 and uses slightly more cpu. Oh well, it works well enough I guess.