Solidworks 2013 running very slow

Hi,

I have installed Solidworks 2013 which was an upgrade from Solidworks 2012 sp4.  After installation i found that using solidworks became extremly slow.  Simple operations like selecting a plane would take 10 seconds.  This makes using solidworks near impossible to works with.  Solidworks was uninstalled, computer restarted and reinstalled to see if the upgrade was the cause but still performed the same.  I updated the driver of the graphic card to the latest but i still got the same problem. 

At the same time of the initial installation i had 3DS max with Vray installed so i dont know if this is causing any conflicts. 

My workstation specs are below :

System Model: HP Z800 Workstation

OS: Microsoft Windows 7 Enterprise x64

Processor: Intel(R) Xeon(R) CPU           X5680  @ 3.33GHz, 3326 Mhz, 6 Core(s)

Total Physical Memory: 24.0 GB

NVIDIA Quadro FX 5800

I can attach a screen recording if required

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