I tried out the POI feature the other day. From the sound of the craft, it seems like the app is over-steering. By that, I mean I think it is making too many directional adjustments too quickly. My video shows some jerkiness as well. Hopefully they can smooth this out in future firmware.
The waypoints feature worked better for me. I defined two waypoints, and it flew smoothly between them. I used the second remote to manually aim the camera, and that video came out smoother. The only problem I found with waypoints is that the speed limit (11 MPH?) is ridiculously low. At least POI lets you go over 20 MPH.