HI AQ_OC,
Not bothered by any noticeable lag or latency here.
As much as I love my Parrot AR Drone 2.0, I love my new iPad 3 even more. Of course I couldn't have one flying without the other.
But about apps for drawing, please spend the few dollars and buy Sketchbook Pro. It truly is an awesome app, for artists using the iPad.
After already trying several of the free drawing apps, including How To Draw and Sketch Paper, I was never really happy with them.
But Sketchbook Pro puts many of those others to shame. If that's even possible for an app? Probably not!!
I haven't really noticed any latency with it, but that's not something that would distract me enough to complain about it.
What is, is. Folks have to realize nothing in life is perfect. I've never been truly impressed by many of the free apps. They almost always seem weak, and there is more often than not, those annoying ads included. I'm quite sure there are other decent apps for aspiring artist's, I just haven't tried many of them.
Try Sketchbook Pro. I'm quite sure you will be satisfied with it.
Good luck...
Chas
Sent from my new iPad 3 using iPF