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Bunkspeed / SW Visualize won't use 2nd GPU

Hi! 

 

I just got my 2nd GTX 770 4GB, in part for gaming, but also to speed up rendering in Solidworks Visualize. (Previously Bunkspeed)

According to afterburner, the usage is 95+ % on both, however the first card runs at 1254mhz (normal game speeds) and the second runs at 530...

On a 2:30 hour render, I only gained 15 minutes.

With Quadro cards, the scaling is supposed to be about 90%, since it uses CUDA, I figured it would scale similarly on the 770's.

Is there anything I could try?

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