Why is zooming so dang slow in SC4

[MDesigns 7]

As the subject states. Zooming in and out is so ungodly slow with this program what gives? Its not my computer as all other design software I use has never had this issue.  It almost makes the program unusable as a designer??

[MZ SKEETER 4,708]

You would probably get better advice contacting Craftedge.com  or go to their forum.