weird surface glitch when rendering

  • hewenj , welcome to our forum! :)

    Can you first of make sure that your graphics card drivers are fully up to date? Depending on whether you're using an AMD card or one from NVIDIA, please acquire the latest ones from their homepage. Also, can you please check the scaling of your model as well?

    What I mean by that:

    Are the model units set to centimeters, and if not, can you please try that as well? Thanks a lot in advance.