Corruption in large Photoshop files

When transferring large files, a chunk of the image gets misplaced. It looks like the a piece has been cut from the corner and pasted in the middle. Contacted Adobe and they blame the network.

Corruption occurs:
-randomly when going through a router
-never when going through a switch
-may be related to transferring files from PCs to Macs

If I switch to the desktop, problem disappears. I can’t do this in all cases. I need a different fix.

1- How can I prevent the file corruption from happening?

2- Alternatively, how will I know when the corruption occurs, so I can redownload?

Bonus pts for good answers for 1 or 2.