Awesome thanks, yea it seems to run absolutly find on half size, recording at 30 fps. I am now writing to my external which seems to do the trick. Cheers for the help.
External would be slower than the local drive I'd think. Try 50 (I hate 30 fps).
My external is USB 3.0, it seems to be ok. I am recording at 60fps now and its smooth as tits. So I'm happy. Cheers.
Tits.