When QuickBooks Desktop is installed, a default memory cache amount that the database manager will use is set. However, there are times when the cache settings are reverted to lower (incorrect and non-default) values and fail to meet the optimal cache amount. This causes QuickBooks Desktop to run slowly.
This issue happens if the server reboots, a Windows update is installed, QuickBooks Desktop is updated to the latest release, QuickBooks Desktop runs a utility on the company file and other possible actions.
This article provides detailed information and steps to resolve the issue.
Intuit recommends more than one solution for this problem. The first solution may solve your problem, or you may need to try all of them to resolve the issue. For best results, perform the solutions in the order shown.
Important: Before performing the solutions below, please ensure that QuickBooks Desktop Enterprise 14.0 or 15.0 is updated to the latest release.
If you altered the memory setting in R5 or before, you may need to re-enter the settings when the server updates or reboots.
Change the settings in the registry: