Can we input lagre glb?

[zzz5y]

Can we input other lagre glb with vertices 300K+ face 500K+ and get a mesh less vertices and less face.But keep the original struct?
In my try. I use 7 bit model. And the generated model is incomplete like the follow pic.
Can you give me some advice?
Thank you so much for your great work.
this model is generate by trellis