it’s ok I gave up caring a long time ago and made my own camera system 
I’ve not checked it with the latest 4.3 version so I’ll give it a try later see if it’s any different and post my dxdiag.
Could well be my PC is a bit rubbish and could do with an upgrade. Specs off the top of my head are:
Nvida 470 GTX
q6600 2.4 ghz
4 gigs of ddr3 RAM