Yeah. Some technical info:
Node webkit uses chromium (basically chrome). When chrome detects that OpenGL isn't installed, it falls back to something called ANGLE which translates OpenGL calls to directx ones, which causes a bit of a performance hit.
It also has a graphics card blacklist, which if the computer has one of the blacklisted cards, it uses software rendering via swiftshader instead. There's a good chance that's what it's doing on that computer.