This is a lot of fun to play with, and it even runs on my phone. A couple of ideas - on mobile, using one finger to both zoom and pan means it's hard to navigate precisely. Maybe one finger pan, pinch to zoom would be nicer? Also, to reduce the flickering while moving, I think there are techniques you can use for less noisy selection of points. Or for a simpler solution, apply fxaa or smaa (or even just a mild blur) to the first few frames.