graphic display problem

We have recently upgrade to creo parametric (MO70). Buti am facing lot of display problem like i can't open big assemblies, i can't move the assembly,and it will take timefor any component to get selected. This problem is for few of our collegues including me rest all are working fine please help me.

We have done following settings:

1) Upgraded the grphic drivers

2) use_software_opengl (yes)

3) graphics - tried for both win32_gdi and opengl*

still we are facing the same result no improvments please any one guide me to over come this problem