Minecraft - server visibility?

Since I'm a very experienced person in Minecraft, I still have a problem that I have not been able to regulate for ages: I have set the visibility in my Spigot Server to 24 chunks (which is also visible), unfortunately mobs or others Players hidden at about 4 to 6 chunks, which can be really annoying. Maybe someone knows what's the problem here and can help me.

I thank you in advance and wish you a happy new year!

Spigot.yml "entity-tracking-range":)

Would you btw recommend the server visibility to 16. Only comes to bugs.

Okay, I'll give it a try. I have the following numbers:

players: 48
animals: 48
monsters: 48
misc: 32
other: 64

So if I increase this, is the visibility for the respective points increased?

Yes, exactly.