This seems like a good time to emphasize that the Sonible VSTs don't remember their settings when you save/close/reopen a Vegas Pro (current build) project.

I've verified this happens with both VST2 and VST3 versions. I care about this issue a lot, because the Sonible collection is immensely useful, especially SmartLimit, which lets you effortlessly set your loudness depending on your streaming target. If you deliver to streaming, I think it's a must-have addition to VP.

So anyhow, they're on sale right now if you're interested (I have no relationship with the company), and I think they offer a free trial if you want to try them out yourself and verify that they don't retain their settings on closing a Vegas project (they reset back to default).

I've learned to set the plugs immediately before a render as a workaround, but obviously that has some limitations...