I always thought it was the japanese lipsync.
I have one. On chain of memories, when you start a new game, the logo starts rotating. Except it goes back to its ps2 position therefore starting the animation from the middle of the screen.
Part of it is, but when I was playing it the other day the game literally stuttered and there was at least a 2 second delay on everything. They didn't bother to optimize Atlantica when they did everything else. It only happens on the PS4 version and not my PS3 copy lol