Is there a difference in performance if I have a flat terrain, or if the terrain is sculpted high like a mountain for example? So for example if I am looking in a direction with no raised mountains and then I look at the mountains, will my FPS go down? I am speaking specifically terrain only, no modeled mesh mountains or anything. Thank you!
I know one of you geniuses knows
No difference. You can test that yourself though (Window->Profiler).
Thanks for the response. I didn’t notice a difference, but made other changes to the scene so I was not sure what was causing the change in performance. Which indicator in the profiler is the terrain performance, is it somewhere under “Camera.Rendering”? Thank you again I appreciate it.
I doubt that it’s listed separately, but the easiest and cleanest test (drawcalls, memory, etc) would be to perform it on an empty scene, then with a default terrain, and then with a sculpted terrain. You will very likely see no difference between 2 and 3. What may have caused you a drop in performance could be that you added foliage/trees (most likely) or textures.
Thank you, good idea I will try that.
Any report on this? Share with the community @Hybris_Team 
I honestly can’t remember lol but I feel like the mountains made performance worse. After this issue, I switched to using separate polygon meshes for mountains, and have reasonable performance with this method. BUT it may have been that I was using extra textures for that part of the terrain, maybe that was causing the performance drop. I should revisit this issue!