How do I find the right balance of gravity, speed, etc?

Basically since I added the platform behavior and removed the gravity instance variable I can't seem to find a balance of what I should set the numbers, and for some reason no matter how high I set the fall speed it just keeps going slow, so I want to know what amount would work the best to imitate the integrity soul in Undertale

I think any movement is limited by Max Speed value. So if you need a faster fall speed, you will have to change Max Speed with an event when your character starts falling.

can you give me an example? i have been experimenting a bit and I still can't seem to fix it

Thanks it works now, I lowered the stats though and it works well