Some of the time stamps you provided -- I didn't see any lag. Like 2nd video .
It mostly seems to be the notification bar, but is the home button supposed to be faster than that?
On my Evo 3D I press home and it takes like a good 1-3 seconds to get back depending on the application.
I don't think you guys know the definition of lag... lol. If you owned a Palm Pre, then maybe you know lag.
This is lag... Please tell me the GS4 doesn't do that, lol.
Palm Pre Review
2:01 - Loading the clock.
2:11 - Stutter when opening another app
2:28 - opening notes... lol.
2:48 - lol browser lag.
Of course, the fourth iteration of the Galaxy series shouldn't lag like that... but the clips I'm seeing are stutters that last a split second. Actual performance doesn't seem to be hindered.
I have videos of the HTC One stuttering coming out of card view (and Sense keyboard) and Iphone going into the search screen -- it stutters as well.