What exactly is a V-User?

I'm having trouble, when running scenarios, getting into an SSL. MY connection gets refused.

When i re-run the test from the Script Recorder, i am able to enter the website fine.

So my conclusion is that the construct of a V-User entity is unique and am curious about any aspects or properties of a "V-user" that I should be aware of...

There is nothing except topical info on the docs provided.