Triple Monitor setup stopped working with Win 10

[Skiver Veteran]

Hi Guys,

I'm a little lost here as I just can't see why Win 10 would affect this in anyway. So what I have;

Dell Latitude E6530 With Dock 

2 X BenQ GL2450H - 1 is connected via DVI to the dock, the other is connected via VGA ( the dock unfortunately doesn't have a second DVI Port)

With Win 8.1 (with Optimus enabled in BIOS) this allowed my display setup to have both the external monitors and my laptop screen active at the same time.

However now it seems I can either have my Laptop screen and the monitor connected via VGA OR both the VGA and DVI Connected monitors working only.

I've tried downgrading NVidia Drivers (not the Intel internal however) and this hasn't made a difference so I'm back running the latest available form their website (it says it supports 10).

Any ideas?