The main reason you are seeing the ground glitching is because you need a skybox (HDRI). (https://polyhaven.com/hdris) does have large rocks/cliffs to use as a horizon; it will match your track. Please see my 3D HDRI Horizon Tutorial, for more information on how to use it.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.