Ok, so PC World insisted I took the wheel and some of my games into the shop
so they could test it, before they would give me my dosh back. And guess
what? (no, guess again) Exactly the same problem on their machines too.
Their trained gorillas (technical staff) could just about manage to spot the
50% reduction in frame rate when I turned on FF in Sports Car GT, so I got
my money back.
I wouldn't recommend this wheel to anyone until Microsoft fix their drivers.
Simon.