Opening files on CIFS mount very slow

I am using Ubuntu 12.04 LTS and have a few CIFS mounts (mounted through fstab). When I open a LibreOffice file from these mounts, they open extremely slow, somewhere in the neighborhood of 1 to 2 minutes before I get to see the document. Saving is also slow.

It is not related to the share, because other programs (Text Editor, GIMP, etc) do not have this problem. If I copy the file locally, LibreOffice opens them with the expected speed.

Perhaps the answer here to turn off GIO Fuse (GVFS) helps?

I don’t use GVFS, but mounted as CIFS from fstab.