Originally Posted by BoneXDA
Beta software to blame.
Exactly. Thank God there are still smart people around. Its because it is beta and not final software. Samsung phones are the most fluid phones out there besides the nexus line ( jelly bean era). The S3 had many Jelly bean leaks ( 10 or more) just 2 weeks before the final version was released. The first leak was very laggy, by the 3rd it was starting to be ok, by the 7th or 8th you could feel project butter. The S IV is shipping in a month so whatever lag there is, it will probably be gone.