We loose our paper space sometimes when making hi res output

Two illustrators here, been with composer for about 6 months.

We've noticed on ocasion that our paper space won't re-appear after making a tif (for example).

Typically when making a tif the paper space goes away, then comes back after the tif has been made. on several ocasions, the paper space won't come back. There seems to be no choice except to get out of composer and open again, wait 15 minutes for it to render to line art again (large models) . as you can imagine, productivity suffers.

do our computers need more juice, or is there a solution we don't know about?

thanks for any help!

SolidworksComposer