Hello Forum laugh

I have had this problem for a long time but I never had to pay much attention to it until yesterday.

For some reason, when my camera goes too far away from its starting position, the map (and every 3D-object) disappears until I move the camera back.



I am sure there must be a simple reason for this, maybe some kind of range problem? But I am not sure what exactly to look for.

(I only ran the most neccesary functions, not much extra)

Can anyone help me with this laugh ?