Slow Performance

Hi,

I am using SolidWrks 2014 SP05 with epdm. I have HP compaq 8200 with Quadro 2000.

I have built a large assembly an I have run it in a large assembly mode but it still not enough and it run very slow.

The slowness occurs in the transition between part and assembly windows

Opening the assembly of 3,000 parts takes about 10 minutes.

I tried Lightweight, speedPack  and the results did not provide significant improvement

How can I solve or even improve slightly this problem because it is a misery to continue like that.

SolidworksAssemblies