Seems the latency is somewhat intentional in some of the examples as they make use of the "delay" feature of the plugin: http://jquerymy.com/api.html#CW-delayed-bi

See for instance the code of the map:

  ui: { //The loupe itself
    "#loupe":{
    recalc:"#json", 
    delay:1,
    ...

or Bézier Curve:

  {
    id:"en.Bezier",
    params: {delay:10},
    ...

Especially on the drag+zoom map. There was terrible lag. It seems like the way you were doing this before is still the better way to do it, at least for now.

Promising project though. If they can fix the latency issues, it'd be something I'd use.