How to make a terrain without using terrain editor?

Hello! I am working on a anime-rpg game, and i wanted to lower the triangles as much as possible. I joined my game in roblox and without parts added, i already have 700k triangles in my map. I am also making the game open world, so i want the map to be hard to explore fully. Is there a way to have a detailed terrain without use of simple parts, and to still have it to be very detailed like terrain editor is or better? Also the map is a forest, and i don’t want it to be plain grass, it want it to have variation. thanks!

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I would recommend using the part to terrain plugin and just building your map with parts before changing it to terrain. From there I would recommend just using the terrain editor to fix up and smooth out everything. Good luck with your game!

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How are you counting triangles in Terrain?

I’ve never heard of it, and I’ve seen some big Terrain maps that don’t lag my computer at all. Roblox already has a Terrain distance rendering optimizer to make less of a load on CPUs.

The best way to optimize Terrain is to have a large flat bottom surface with the top surface(s) sculpted the way you’d like it to look. Having thin sections of Terrain (a hollowed out Terrain map) with rougher surfaces that aren’t visible but are still rendered will add more surface area that has to be calculated at shorter distances from your Camera in the workspace.

if you go in game, and push shift+f2

So I will then just make a really thin layer of terrain, good idea! Thanks.