this surprises me every time.
The same file (about 400 MB) on different and identical pcs have very different behavior.
When I perform a "save a copy" (smaller, compact)
One PC takes more or less 10 sec, I can easily see the two steps proceeding.
One PC takes 1 sec, I cannot see anything, it seems not performed, but backup file is there.
Every time I get surprised, is there a reason for that ?