Let us know the results!
I am just getting back to this issue. I had other priorities for awhile, and at the time, it was working - if I restart enough times - I can get all 4 monitors to work as a plug and play.
I switched cables between 2 and 4 and the resolution did not change from the 4th(right most monitor). IE the same monitor is affected when switching cables.
Before I restarted the system I uninstallled all the monitors from device mgr.
Upon restarting it loads 3 plug and play monitors and 4 default monitors.