the same as above, i was zooming/panning in 3ds, then "An error occured..." box popped up and proposed to save file...
changing DX / OpenGL did not help.

Does someone know, what is happening?

Examples of scene:

I have 4 GB of RAM , nVidia GTX 260 graphic card.
Working in viewport was good on x32.

To work with rendering and taking some correction i cannot sit down to x64 again, it is very uncomfortable.

It is really annoying, anyway I thank very much for help.

Best regards,