Thanks, folks, as always, for the prompt responses. Original Question: >>Maybe I ought to wait until Friday, because it is really only out of interest that I ask... I have a couple of fairly large assembly drawings open on a pretty inferior machine. When I change window from drawing 1 to drawing 2, the clock comes up and I sit and wait while it does - what? In the event, this morning, it crashed after 5 minutes, because it ran out of memory, but that is neither here nor there. The question, I suppose, boils down to: Given that I have displayed each of the drawings already, what takes the time when I switch between windows? Surely it isn't regenerating anything, everything is already displayed. It's busy doing something, lots of hard sums, because Task Manager shows 100% CPU usage throughout. I just can't think what it is working out. Shouldn't it just display either pretty picture more or less instantly, until I ask it to do something clever, like move a note, or change zoom? I know the reality is that I just have to wait, at least until I get a half-decent machine, but I would feel less frustrated if I knew why I was having to wait. Any suggestions?<< Answers: I think your problem could be
Regenerates the drawing display whenever you change from one window to another.
yes-Regenerates both the drawing and the drawing view.
no-Regenerates the drawing but not the view unless you select View > Repaint, View > Update, or Edit > Regen.
We have had this problem when using large assembly drawings in the past, and then set this to NO while working on the drawings. We like to set it back to yes when working on lighter drawings so that you don't have to remember to regen.
Try auto_regen_views option in config.pro
That is a very astute observation. I am currently working with some very high brow people trying to answer this very point. As far as my scenario is concerned, I open a drawing and it is displayed on the screen...eventually. I change to work on another drawing in the same session then I want to switch back to the drawing I HAVE ALREADY OPENED. ProE sits and does its working out thing, eventually a view may appear followed by another view until some time later, the whole drawing is opened and you think "Great!"..... But wait, the screen then goes black (background color) and the whole thing starts over again until - coffee break over, counted the bricks in the wall, scratched every part of my anatomy, dug the wax out of BOTH ears - the drawing appears and I can work on it. We have some very powerful machines and like you, I can track it via the task manager and like you, I can see it maxed out all the time ProE is working but like you, I am asking.... WHY!
I must say, changing the entry auto_regen_views from yes to no and back again makes a huge difference!
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