Blender Terrain collider glitch

[RagingRahul]

I am trying to import a terrain made in blender to roblox.
i am having this weird glitch where my character starts flying above certain parts of the terrain.
i have tried making the terrain size really small and changing the collision fidelity to precision convex(the last option) but still i am facing the same problem.

here is the terrain size and you can see the character is still floating

[KevinRexFromDk (Kevin)]

Hey there RagingRahul!

I recently helped someone out with this issue, all you gotta do is make sure PreciseConvexDecompition is turned on for the mesh in properties of the mesh. This can be found under behavior as ‘CollisionFidelity’.

[RagingRahul]

Hii Kevin.
I did try that option as I mentioned in the post above.
Still the problem remains.

[KevinRexFromDk (Kevin)]

Oh you did??? I didn’t even notice that in the post, wow. Well, not too sure what happened there then, it’s really odd. I’ll get back to you if i find out

[RagingRahul]

Yeah.
A solution will be highly appreciated

[DapperFoxySWAT (Dapper)]

There’s 3 solutions for this,
If this problem help you, Try using search tool commonly

How to fix unwanted collision for MeshPart?

Roblox uses Approximate Convex Decomposition (for CSGs and MeshParts), meaning that every shape will use only convex chunks (1). It cannot create concave chunks, it can only imitate concavity by breaking the shape into mulitple convex chunks. To achieve more precise concave shape imitation you need to split the mesh at concave areas. This will allow ACD to create convex chunks at a smaller area, resulting in the collision shape being more credible to the actual mesh shape. (1) There are 3 Co…

Mesh collision problem

If the entire map is one big mesh, you’re going to have a problem. The collision shape of a mesh is different and less exact than the actual shape of the object–you just don’t notice it because meshes are rarely big enough to cause a noticeable difference. It’s similar to how cutting a hole in a wall with CSG would make it impossible to walk through. You could try breaking down the mesh into smaller chunks, but I’m not sure how well that would work. A better option, though tedious, is to disabl…

Collision by using MeshID

Hey there, there is a longer, manual way to do this. The original mesh being collision disabled and importing a mesh using this plugin https://www.roblox.com/library/267728602/Physical-Obj-Importer to turn the mesh into parts. Meshes still don’t have good collisions, so use parts as collisions until that happens.

I hope this fix your problem

[eqlairs (alex)]

Well if you’re looking for good collisions you could use an obj converter plugin to convert all the tris in the terrain to wedges on Roblox. That’ll guarantee good collisions, however you may sacrifice some performance.

A good converter plugin is OBJ Collision Generator Plugin