thank you so much for your interest. As i told you already we do not limit the windows paging file and set its size as per the space available in the drives.
What do you mean by "network"? of course in our company we have a LAN.
Even if you have the right settings for CATIA or your computer or a good hardware configuration, if you load a heavy assembly (thousands of parts) from a local computer or from network, it will take a while to close it, no matter if you are using a PDM system or not.
I saw many users just killing CATIA process in order to close CATIA but this is a bad solution because you can have a CATIA license hang-ed up on server, blocked for a period of time.