I have been trying to teach myself how to use Marmoset Toolbag (and re-learn Vue!) using an old project I kept running into trouble with, but really wanted to finish. I'm having some bumps and starts, especially with finding which options work for the Marmoset preview as opposed to needing to be exported as a video, but I am learning! It looks like the "speedy viewport mode" gives a more accurate preview of what will show up in Marmoset Viewer, right?
I had a number of qualms about introducing effects such as depth of field or fog into a scene where I wanted to show off the entire model/texture, but found that it helped to reduce the busy visual cacophany of fence sections. It made it look less like a tangled mess. It was nice to see the video rendering using my RTX card instead of bogging down my CPU, too, which meant I could actually work on more than one thing at once!
I have four other fence types (with variations) in partial stages of construction that I had hoped to finish, but I have some other commitments to address first so it may take a bit longer. I just really wanted to iron out this part of my workflow before I went back to them.