printpreview documents/quick print

Hello CO support team,

I’m using COv4 client-server version; I’m very satisfied with the speed of accessing the database, but the speed of -the preview documents- is very slow (takes about 20-25 secs); after that the quick print takes about 10-15 secs. (normally with other documents <9 secs)(more than 30 secs to print a documents is too long)

This is occurs when i’m logging in (lokal wired network) with my vista notebook to my server.
When I’m working directly from my server the speed much better. How can I improve the speed ?

regards Maarten