The default shortcuts set in Studio to swap between different grid increments don’t update the Snap to Grid UI indicator in Studio ribbon toolbar. Attempting to use these shortcuts will change your Snap to Grid increment, but it won’t change the value written under the Studio Model toolbar.
I was just trying this out, as it would be a great UX feature that’d smooth out development process… Unfortunately attempting to press Alt + R (to edit the rotation increment) did nothing for me in studio… but only toggled my Nvidia performance widget: