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ATI 4850 IceQ sluggish at 99% memory use

Well the card in running in full 3D clocks at the desktop. This is odd as this should only happen when a full screen 3D game or application is run, your clearly not doing this....

Try un-installing Fraps as this may be causing issues.
 
Installed CDROM driver. (8.6)
Removed FRAP
Removed CCC
Installed ATI tray tools

No change.

We discovered that when PC went into sleep mode…then came out of this and resumed normal use - the PC operated normally.
- so whatever happens when PC goes in and out of sleep mode, appears to resolve this issue.
Reinstalled the ccc (8.6) to check the activity and it confirmed the above findings.
99% activity following start up - then after going in and out of sleep mode - all was OK
It still displays 99% activity, but performance appears to be OK.
THEN
Played a game which indicated that it needed updated drivers
So – updated drivers to version 8.11 restarted and the PC operated normally.
Then following a cold reboot - the 99%activity resumed as shown on the ccc.. Requiring the sleep mode to resolve the problem.

Can anyone offer an explanation to what is going on!
 
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