My experience with Kailh Purple pros was miserable, they had an extreme amount of bind that killed my fingers and the ping was unreal.
Both of the Kalih switches (Brown V2 and Crystal Royal) feel "crunchy" (break-point is not smooth but gritty) to me.
But I don't really consider that to be a downside. It's just a different type of tactile feedback to me.
In difference to the Brown V2, the Royal's have a pseudo "click" on actuation.
Depending on the board (mounting, dimensions, material) that could cause resonance I guess?
EDIT: Just noticed the "Purple Pro" you mentioned, and the "Royal's" I tested are two different switches.


I recently got a set of Akko Creamy Purples, been loving them.
If you like high tactilty but soft springs, these are fantastic.
...
But 1-25% of switches could feel unlike the rest.
First I was "Okay, gonna try these..."
But the lack of consistency frightens me a bit ^^;