I've updated 5870 drivers about an hour ago but what happened was that the performance dropped quite a lot. Taking a look and ati's overdrive page I'm seeing gpu activity between 75% and 82%.

Anyone else having the same problems?

(I did properly unistall 10.2 version)

I am running the 10.3 beta drivers (same version as release from what I hear), but am still running at around 98%.

---

same here - running at 98% (on a 5970)

Try upping the core clock speed in small stages (carefully .... just back off 25Mhz if it locks up) see if you now have the headroom to run the core clock faster.

Keep the GPU memory clock as low as possible, GPU memory bandwidth is not significant at MW. Run GPU memory clock as low as you can practically get it for MW, even 500Mhz would not be too low (that will save power and lower temps).

At MW, running high memory speed on GPUs just increases the GPU's value as a space heater, and boosts local power company profits for zero effect :)

Regards
Zy