Problem
: The default scale of
(100, 100 , 1)
does not line up with Unity grid, and shows the lines at a meaningless arbitrary interval.
Cause
: This is due to the default GridFloor_udon material has a tiling of 8 by 8.
Solution
: Rescale the Floor object to
(64, 64, 1)
will line up the texture with Unity grid perfectly.