3d Rendering Issues

[#1]

Hi all, 

I'm new here. Unfortunately, I'm having an issue. Whenever I render 3d objects in illustrator I notice missing pixels and jagged lines running through the objects. I also see a really pixelated outline around the objects as well. This happens no matter what object or lighting/material settings I use. Plus, the missing pixels are still there after I export the objects. I just made three examples so you can see what I mean. Photo one is at 100% and photo two is at 200%. What's strange is that this just started happening a couple days ago. I never really had these issues before when I rendered objects. I'm not sure if any of this matters but I made sure my document raster effects settings are 300ppi. Also, I'm pretty sure my GPU (GeForce RTX 3060) is up to date. I appreciate any help that I can get. 

[Monika Gause]

Those blue lines look like the highlight when seelcting the objects. Apart from that, please point to the issues, I don't see them.

How large are those objects?

[#3]

Hopefully these pictures show my problem a little bit better. The width and height of the objects are around 250px.