Making a Large Map

I am working on a game with a large map. ~7000-9000 studs, I know it’s probably too big but I want the world to be big and open for players to use. And I know, I will deal with the rendering and lag situations, I am just asking for any advice.

I use Roblox terrain, and I’ve tried a lot of solutions. The following solutions I’ve done are:
-Start from scratch, but couldn’t get realistic looking land and was very time consuming.
-Used fog screens and trying to edit them but never got a good result.

I wanted to know if there was anyway to make the terrain look decent, on a large scaled map.

If you have any questions, type them down and I’ll respond as soon as I can.

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I like using triangle terrain for all terrain purposes. You can see examples in Apocalypse Rising. You can also create somewhat triangle terrain that also uses blocks, like Lumber Tycoon 2.

These games are popular and performant.

I don’t suggest using Roblox Terrain unless you need material blending or water. I find it too laggy for large scale maps.

Also, StreamingEnabled should prevent lag in your case.

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Terrain isn’t really the issue here. Take a look at real images of mountainous terrain, sand dunes, shorelines, or whatever you are trying to reproduce and get hints of what looks good for your place.
Roblox Terrain isn’t the greatest, but it isn’t the worst for making realistic worlds.
As far as lag goes, I’ve read here that as long as you make the Terrain underneath your world as flat as possible it’ll help cut down on the extra faces of hollow Terrain having to be calculated and rendered.

I have a few Terrain places, and although creating and detailing it can be a bit tedious it looks better than triangle terrain.

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