Is this true about the Square Wheels Royale?

Mine does, but it’s probably tunable.

Mine is very smooth. Agree with tiny finger nail vibe but I can’t feel it on the string.

Mine is smooth. I don’t notice any vibe.

Many Royales have vibe. Mine is pretty smooth, but others I have tried did have some vibe. Maybe the first run was more vibey? Not sure.

I think mine is one of the pre-pro ones. It has a shallower response recess.