Terrible Games Performance

[topcat098]

I wonder if anyone can help me. I’ve just started playing a game (the Witcher Enhanced Edition) and the performance is terrible. I might get 3 or 4 secs of action then it stops completely for about a second. In short it is unplayable. I’ve noticed the same on other games (games are probably the only time I really test my system,) If I had a low powered system this would be understandable but I do not. Indeed the same games run acceptably on my old XL laptop and my mother’s low spec W7 system.

My spec

Intel Core2 Quad core Q6700
3Gb RAM
ATI Radeon HD5700xx
Window 7 – 64 bit
Realtek HD Audio

Windows Assessment
Processor 5.9
Memory 5.9
Graphics 7.1
Gaming Graphics 7.1
Primary Hard Disk 5.7
Overall 5.7

All the drivers are bang up to date as is W7.
Because of the problems I’ve created a dedicated games boot. Aero is switched off, No Anti-Virus Sw. No unnecessary programs. This was a new build of W7-64. This improves things only a little – it is still unplayable.
Since the problem was noted I’ve ungraded my Graphics, to no effect. I'm not being over fussy - it really makes gameplay impossible.

Any ideas, or any ideas how I can pursue this?

 

[hang-the-9]

Any games this does NOT happen to? Is there a way you can run in a different DirectX mode (force DX9 mode or something)? Run 3DMark benchmark, see if those results are normal.