Starts slowly after being idle

Application Pool Suspension

It takes too long to start working with Design Editor.

Solution

To avoid the suspension of the Design Editor application pool, perform the following:

1. Install the Application Initialization role. In Windows Server 2012 and higher, in the Add Roles and Feature Wizard, select the Application Initialization check box.

2. In IIS Manager, right-click the Design Editor application pool, and then click Advanced Settings. Set the Start Mode option to AlwaysRunning and Idle Time-out (minutes) to 0.

3. On the left pane of IIS Manager, in the Sites list, navigate to your Design Editor application. Right-click the application node and select Manage Application > Advanced Settings. Set Preload Enabled to True.

4. At the command prompt while running as an administrator, type iisreset to restart IIS.

For more details, refer to Cold Start.