I updated that post with the following...
"Thankyou @buglover but I do not wish to take full credibility for this find, I myself was directed to this information from another user
The original post by TirigonX of "step" was quoted to me by Nebulous112 also of "step" that the steam overlay could be an issue.
Any further information I have supplied here is direct from me and not from external sources"
Credit where credit is due. This was news to Boris, as well, and is now stickied information in that thread.