I have a sheetmetal part with over 1000 holes, just finished it up, works great. I am having the model checked by a co-worker and on his system the model rebuilds on every click of the mouse when trying to scroll/zoom in or out. This will take forever to verify the model and it does not do this on my system. We are trying to find out in the settings where this is located to speed up or eliminate the rebuild on zoom? Thanks, Chris.