USCIS Processing Time as of 02/15/2018
USCIS generally process cases in the order they receive them. The link below provides you an estimate of how much time the office handling your case currently takes to process your type of application, petition, or request.
USCIS Processing Time Information
I work in the HR department at an IT consulting firm. We needed to get an employee on board to begin a project, but first needed to transfer his visa. Dan and Anna helped make the process extremely smooth, not to mention quick. It was a pleasure to work with both of them.