This is zoomed in quite far to show the pixelation. The fun part is that we still use our fast system to zoom/pan and then after you stop, it computes and fades the vector render on top (all computed in a background CPU thread so it's still fast). I think you'll like it. We hope to have this on the Test Server sometime early next week.
Before

After

I'm so use to TIFF's in OST, the way zzTO is now is wonderful. Don't make it slower like bluebeam is my only request. Bluebeam renders slow on big files.
@Kyle Agreed. I think we have found a good hybrid, but if it gives any issues, there will be a setting to turn it off:

Thought/idea.....sometimes PDF snap makes things really slow, so I turn it off and life is good. Can we also get a "4K" button on the bottom right to make it flow with the other on/off buttons. Hmmmm
@Kyle Good idea. Maybe something like this for an easy toggle like the snapping toggles:
