This is quite embarrassing
It would seem that the problem has been fixed. Without looking to tempt fate, my graphics and FPS appear to be back to normal.
The problem?
IMG-20131015-WA0009.jpg
The three lights next to the power button! Turned them off and all was OK :banghead
Everything is at stock, or reduced (*RAM for example) so if everything stays the same, I will look to overclock the chip shortly. Then I cant take another 7 pages up
Thank you for all your help, much appreciated.