Whiteboard app using Phaser or Pixi?

Looking into implementing a whiteboard type app...

Following the example at http://examples.phaser.io/_site/view_full.html?d=display&f=render+texture+trail.js gets it most of the way there, but only works when moving the mouse/touch very slowly.

In order to have a smoother experience when moving quickly, it needs to render all the gaps between last position and current position.

Do phaser or pixi support some optimized of doing this, i.e. processing a bunch of render() calls at once rather than discretely (in a loop)?

Thanks!