I'm still in the first city but I quickly discovered that when you're in the old man's garden and you try to encounter Pokemon in the upper left side by quickly pressing the left and right keys it can trigger a glitch that causes the next Pokemon battle to become faster. But also after the battle ends you'll still be fast which means you can travel faster than your running boots would usually allow. When you save and exit the game and restart it however it'll be gone again so you won't be stuck with it. I don't know if that was a one time thing or if it can be triggered again but that was a pretty cool and helpful glitch, ngl.
