CorelDRAW X5 :: Slow When Using File Located On Network Server?

I've been having a problem with Draw X5 freezing for a few seconds every minute or so. Quite often when I try to drag an object around the page everything stops (program freezes) and I have to wait a few seconds till it starts again.  Also happens sometimes when I drag an object to a new layer.  Actually it can happen on any action.

All the .cdr files are located on a network server, but today I've come to the conclusion that Draw is somehow referencing the file every few minutes (usually something like just one minute between pauses).   And because it's a bit of a slow connection speed between the network and my pc, the program hangs (like its slower to save and load from the network, than my local drive). I've got the Save Backup set to 30 mins so would have thought I'd only get an odd pause every 30mins (and turning off auto backup). 

I thought I'd see what a file was like which was located on a local drive and so far no pauses.  While I can obviously save to my local drive to work on, then save back to the network, it's a hassle and not ideal as it's harder to track the up-to-date file versions.  This doesn't happen with any other program I use, and they're all saved to a network server.

how I can stop Draw X5 looking at the file location until I save or auto save?  My system is Win7 64bit 12GB i7 core, Nvidia GTX 460.  The program has all the service packs etc.  I've turned off the live text to no avail.  There is no added junk (colour spaces etc) in the files.  It happens no matter what the file size.  And it's not my antivirus, as I turned it off and the odd pauses continue.