I’d recommend taking a look at the resolution of the model’s texture files. Lower resolution textures will result in greater pixelation.
All the best,
No I don’t think that’s it, the UV map is 1024 x 1024, so pretty high res - this is an issue with capturing the scene using z.camera and then sharing the image - the models become very pixellated in that image. In the scene itself they are completely fine. It’s very puzzling.