>>41909951From what i understand Sinnoh is just a big map and the game loads the textures of areas around the player
That's how tweaking and surf glitches allow you to walk from the E4 all the way to new moon island
Tweaking glitch happens when you go back and forth between tiles that load two areas and the game gets confused
So my guess is that they did it this way to give the game time to load properly and people don't run into this glitch (at least without deliberately triggering)
Now the big question is why not unlock or at least raise the Framerate during battles?