Hi reina,
The cause of this problem is unknown, but if the problem does not occur when using network preview or previewing with the browser version of GDevelop, it may be an issue with Electron, which GDevelop uses.
(This problem appears to occur when using AMD CPU or GPU.)
If this is the case, unfortunately it would be difficult for me to solve the problem. 😥
Does your game render 3D scenes correctly in network previews or published games?