::Update::

Micheal's suggestions were applied, although the video driver was current.

Things have improved.

I opened my largest moi file at 14mb, and it runs well. Navigation is seamless, and common commands work fine except for a little slowdown on zoom/orbit whilst in the line command. I am going to stick with it, I have PS loaded as well and it gets the job done. This surface can handle exactly what I needed it for.

I think the problems I had earlier were caused by my entire cloud account being downloaded in the background. Just before I wrote this post I had another error message displayed in the viewport in moi, and all I caught was,"could not create 3..." then it closed when the model opened.


The model used for testing