If an Edit Session is started, changing visibility of layers and Zoom is significant slower than in version 9.x. How can this be improved?
This is caused by the ArcGIS functionality Feature Templates introduced with version 10. This functionality is watching the visibility of layers.
Esri feature templates are often not used by UT for ArcGIS users, though, so the performance implications for determining which templates should be available given the current extent and visible set of layers can be avoided. A registry entry can be used to disable the use of feature templates. A registry key described in the ArcGIS Desktop Advanced Settings Registry Keys document found in the Utilities directory of ArcGIS for Desktop installs can be used to disable the use of Esri feature templates. The key to look for is the UseTemplates option on the Editor tab. This option can be updated directly through the registry or by using the AdvancedArcMapSettings application in the utility directory of your desktop install. Turning off this registry key will revert the editor toolbar back to the same look and feel as was available before ArcGIS for Desktop 10.0 and remove the ability to add features using templates and the Create Features palette.
If Esri feature templates are used, feature templates should only defined for required layers at least. ArcGIS creates feature templates automatically, if a layer is added. Before storing a Map Display, not required feature templates should be removed.