ISAVEPERCENT
Determines the percentage of space in a drawing file that is used for incremental saves. When the amount of data to save exceeds the ISAVEPERCENT setting, a full save will be performed the next time a save operation is required. If set to 0, incremental saves are disabled and each save operation is performed as a full save. Higher values improve file save performance but increase file sizes.
Type: Integer
Saved: In the registry
Range: 0 to 100
Default: 50