How to Change Grid subdivisions (2.81) The subdivisions options in viewport overlays is greyed out in 2.81. Any changes in this have no effect on grid display. Maybe, I have set some system option by mistake. How do I enable grid subdivisions in 2.81?
Go to Scene Properties> Units> Unit System and set Metric or Imperial to None.

Then the option to change the subdivisions in the Viewport Overlays will be enabled again.

I'm using Blender v2.82.