Sorry, just realised how badly I described the problem.
The head tracking works perfectly with Bioshock infinite.
Behaves exactly as the mouse look does.
Portal 2 problem: –
Look up = works fine
Look down = works fine
Look right = works fine
Look left = the whole screen moves/drags left. It does not look left but moves the sceen left.
Look left does not work in tracking but pulls the whole screen left.
Yes my games are in proper default locations within steam.
The only game on the list that I can get to optimise is Bioshock infinite.
This works really well, but others that I have have path errors, all are legit steam games in proper default locations.
Is there any plas to address this in future releases?