Unity camera render performance with many terrains

Questions & Answers
1

Hi,
I am currently building a tile based game where the tiles are represented by unity terrain objects. Unfortunately the performace goes down linear with the amount of tiles I generate.
I identified the process Camera.Render to be responsible for my bad performance but honestly this is where my knowledge stops. I already activated Occlusion Culling on my cam so it shouldnt render objects which arent in sight right? Still the performance is equally bad if I look in the distance or just on a few tiles right on the ground.
If I disable the camera my game runs just fine which in my opinion shows clearly that it is not because of other performance problems.
I think that for some reason all my obects are rendered all the time, even if they are clearly not in sight. Please help :confused:

EDIT: I just found that of my 99,5% rendering 99,2% go into “Culling” of which 83,9% go into something called “PrepareSceneCullingParameters”. The 2 subprocesses of that however show no significant workload.
So obviously something culling based is going on but I dont know how to optimize this.

2

Bump, there is so few threads and still no solution fixing this. Im desperate for help

3

I am way beyond this now. I think terrains are just something that is supposed to be used for games which feature 1 of them loaded at the same time. There is definetly no process optimizing for multiple terrains and I do not think there ever will be. Sry mate.

If u wanna use customly shaped tiles I recommend building them as 3D models and using these models in your game.