Change Pickbox Size?

Is there a way to change the pickbox size? I’m sure default works for most people, but my preference is to make it larger so I can see it better. It’s very easy in Autocad, but I can’t seem to do it in Rhino. I have tried changing numerical values in Tools > Options > Advanced, but it didn’t appear to change anything visually. Am I missing something? Thanks.

Rhino does not have a visible “pickbox” like AutoCAD.
Instead it has a “snap radius” that works much the same way, but without something else on the screen obscuring objects.

The default is 15 pixels which is comfortble for standard resolution monitors.
You might want to make it bigger if you’re running a 4k of 5k.

Options > Modeling Aids

Thank you John, very helpful.