How to show all objects in a Unity game?

Question

Unity

There is a field with 4000 balls, but not all of them are shown - ie. the player moves and you can see how some balls appear.

There is also this problem:

I'm getting closer:

If this is due to optimization, how can I turn it off?
Or is the problem something else?

Answer 1

This is my mistake - the Rendering Mode of the material was set to Transperent instead of Opaque.

Answer 2

The camera has Near/Far parameters, which are responsible for the proximity/clipping distance of the rendered objects..

Answer 3

Camera distance needs to be adjusted