I did some tests in my computer and in my iPhone using the application built in the Intel XDK.
C2 version: 221
Node Webkit: v0.13.0 beta 4 (Chromium 48) [Requires r217+]
This is the result of the game running in debug mode (node webkit). Obs: This is a static menu that has no motion and uses its own event sheet.
The same result using chrome to preview game in debug mode instead node webkit
Other strange behaviors:
While previewing the game in node webkit, my Mac's CPU consumes 120%. Something similar happens when the Intel XDK is building the application.
The device getting extremely hot and the battery decreases quickly after five minutes