View manipulation issues

Hello!

I have a Nvidia quadro FX1700 running on W7 x64 bits with the solidworks 2012 recommended driver version.

When trying to rotate or pan the view (with a considerable number of entities), solidworks gets stuck for some seconds (100% CPU usage) and then it rotates at high speed. It is really annoying the several seconds pause every time I need to navigate on the design!

¿can anyone help?

Thanks in advance!

SolidworksUser Interface