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Erratic GPU usage Witcher 3 Crossfire.

Question asked by gunjob on Apr 25, 2016
Latest reply on Aug 14, 2016 by gunjob

FuryX CrossfireX

Intel 6700k @ stock speeds to aid in trouble shooting.

Asus Hero 8 with the latest Bios.

Windows 10 64bit Home.

Dell UHD monitor in DP 1.2 mode using MST.

 

Assume all current drivers installed for all hardware. On a fresh Windows install and fresh download/install of TW3. And not a power issue as other Games as well as 3Dmark have no issues fully utilizing both GPU's.

 

Issue:

 

GPU usage appears to alternate but is never consistent on either GPU while player TW3, this does not happen on any other Crossfire support title and is only a recent issue for me. For example FO4 scales well and keeps both GPU's loaded.

 

This graph ( see attached) is from a short snap of game play. Between the red lines is when the game was running with no frame rate cap, Vsync disabled  and no FRTC. Both GPU's appear to report 0% - 100% alternating based off which is at 100%.

 

I used to get 55-60FPS but since this issue occurred it sits at 42FPS.

 

 

Suggestions welcome.

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