Is there a way to slow down the speed of the emulator without modifying the speed limit setting?

Right now I have my speed limit is set to 100%. When I disable the speed limit, my game (Pokemon Omega Ruby), speeds up to about 500%.

I use speed limit setting to set the game at 100% for walking/map navigation, but I disable the speed limit while in a battle or a tedious part of the game to rush through it.

The problem is that the unlocked speed is too fast. Is there a way to make it so the game only speeds up to like 250%.