InV4 under "supports" we have the enable support material check box so that when you click prepare to print supports are generated automatically.
In V5, as far as I can tell, if we hit prepare to print we get a dialog asking if you'd like to add supports now and then we get another box where we have to click to auto generate supports then we have to click prepare to print AGAIN.
So instead of S3D auto generating supports when we click prepare to print and just going to the preview mode we now have to click more times to get supports to generate.
This just adds more steps to simply get to the preview mode which includes hitting prepare to print twice.