My tablet has the issue in reverse. If --ignore-gpu-blacklist is enable, Crosswalk/Chromium attempts to use hardware acceleration for canvas. While it does work, it also introduces a driver bug that causes a "freeze" in the animations (Fade behavior) which effectively freezes the game. When it's disabled and using software rendering, my tablet performs flawlessly. So, it's a double-edged sword.
For those interested, you can toggle settings like --ignore-gpu-blacklist in Chrome by using chrome://flags. You can also get information about your GPU using chrome://gpu.
Also, if you have not attempted to use Intel XDK's profile features, I highly recommend it. It can help you identify a lot of bottlenecks. It's how I originally pinned down my issue as a GPU issue and not Construct or Cordova.
Side note. I am using a Dell Venue 7 3730 with the PowerVR SXG544 GPU. If you search, you'll find a few bug reports on it in relation to Chromium/Chrome.