There does seem to be some difference in instantiation. I built two forms, both had the following in common:

1) both were subclassed from the same form class
2) both had the same tables to open in their data environment
3) both had a page frame with 5 pages.
4) both had a grid on the first page
5) both had 5 command buttons on the bottom of the form
6) and both had the same number of text boxes with matching labels on the top half of the form.

The difference between the two was that I included grids and extra text boxes on the other pages of one form.

I then added the same code in the load and init methods of the form. The load method stored the result of seconds(). The init method did the same and then showed the difference between it's seconds()'s result and the inits (i.e. the number of seconds that had elapsed between load and init). On my machine there was visually no significance in the time to display the forms but there was consistant time difference between the two. The form with objects on the other pages took slightly longer to instantiate.

The biggest problem showed up on an old Win95 machine. There was a noticeable difference in the amount of time it took for each form to display. The form without the extra objects displayed much quicker and the amount of time calculated in my methods was as much as a second.

I could definitely be overlooking something here; but it does seem like there is some extra overhead with having the extra objects on a page frame even if they're not initially visible.