Will having "Delete Unused Levels" selected in the Compress Options affect Drawing View performance?
Drawing View performance is very slow.
It is recommended not to include the “Delete Unused Levels”, ‘Delete Building Dataset Elements” and “Delete Building Display Accelerators” during the compress.”If you compress these options out, you are impacting performance because it will recreate these at the next opening of the model.
NOTE: In some cases if file sizes appear to be excessive, it is worth running a compress with these two options enabled to clear all the cached data allowing a clean cache to be recreated next time the file is opened.
Delete Building Dataset Elements – deletes the DV levels. This removes all the levels staged for DV resymbolization and annotation.. if this is compressed out, the application will re harvest the levels from the part and family. There are some additional optimization done under here that would not makes sense to the average user. (parasolid body representations)
Delete Building Display Accelerators – delete the unification cache generated for a DV view, so it can open and update quickly. If deleted the unification has to be reprocessed and cached.
The file size does not equate to file performance when it comes to DV as we are now building in certain caches to accelerate the display of Drawing Views.
A few details on File Compress on Exit :
An increased file size when working with Dynamic Views does not necessarily mean reduced performance, instead it would be beneficial for faster performance as it includes the unification cache.
Compress Options in AECOSim Building Designer - Behaviour and Configuration