Snapshot can't create backups

We've had an ongoing issue with Snapshot failing whilst backing up files... (see https://premium.wpmudev.org/forums/topic/timeout-with-snapshot but we haven't got any response there for some time so hoping someone new might pick this up).

This has happened on at least three different sites we are running on this server now... all with pretty minimal number of files, but it seems that snapshot gets to about the 29% mark of file backups before it just sits there and eventually falls over.

I have opened up support through the WPMU Dev plugin so you should be able to get in and check it out. Let me know if not.