When I see a pedestrian like a block away, their full detail isn't loaded. When I get a little closer their textures complete themselves, if that makes any since. Is this considered pop ins? Or is this normal? I'm on ps3. I rarely see pop ins during cutscenes. Only that first intro cutscene of Michael walking on the beach it was bad..
Its called Level of Detail drawing....It happens in nearly every game. Even on PC, though on PC it might be less subtle since depending on your settings you can increase the distance the details are drawn.
Honestly, pop-in like that you see in the video is fairly normal. I notice it from time to time but it doesnt really bother me. Installing the play disc onto my USB has helped alot.