The hiccups seem to be occuring in these first-release un-optimized applications. They also seem to occur most often while the application is actively loading data and you are trying to use it.
Some apps work fine, and if you notice, most apps will work just fine once they have completely loaded any and all information on the screen. I find that after waiting a bit for Facebook to load everything, it pans and scrolls just as well as the underlying OS.
That being said, since I notice some apps can load data and run just fine, that its just more a developer side issue than the phone/OS. I'm sure as devs get the hang of programming and optimizing their apps we will see much better performing applications.
Nokia Lumia 920, Nokia Lumia 900, Droid DNA
Microsoft Surface Pro 128GB
Retired: Helio Ocean, HTC Touch Pro, HTC HD2, HTC EVO 4G, HTC HD7, HTC Touch Pro2, HTC HD7S, HTC One X, HP Veer 4G, HTC TITAN, HTC Thunderbolt, HTC One, Nokia Lumia 800
Windows Phone Expert / Development