Strange artifacts on meshes involving a Humanoid

Description


When a mesh is used as a character model with a Humanoid, it usually ends up creating odd, grey artifacts on some spots:

Even when no textures are involved.
RobloxStudioBeta_2019-11-04_17-56-24

Frequency


The bug appeared on both my character models which I uploaded and I heard others have similar issues.

Reproduction


To reproduce this bug:

  1. Create a character model in a 3D modelling software;
  2. Upload it to Roblox;
  3. Rig the meshes and model it together;
  4. Put a Humanoid inside the character;

Instead of showing these artifacts, it should not show them.
Since the model I made is for a game, I’d prefer not sharing it. However I’m sure it’s similar with other ‘detailed’ models as well.
I could share my old model, but only through DM’s with Roblox staff.

Location


The bug happens in Studio for sure and probably in the player too.
The place I’m currently working on can be found here:

Computer Specs


Since it’s a graphics-related bug:

Videocard: Nvidia Geforce GTX 1050
Full details here: OMEN by HP - 15-ce062nd productspecificaties | HP® Klantondersteuning

Date & Time


The date of when this bug started is unknown to me.

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