Description

On a Content Management (CM) instance, loading a page with multiple renderings might tend to get slower in the Experience Editor. The issue occurs when the content testing functionality is enabled.

Solution

To resolve the issue, consider one of the following options:

• Upgrade a Sitecore XP instance to Sitecore XP 10.0.0 or later.
• Download and install the hotfix or the patch compatible with the affected product version:
  
  • For Sitecore XP 9.0.2, download and install the patch found on this page: https://github.com/SitecoreSupport/Sitecore.Support.316473/releases/tag/9.0.2.1.
  • For Sitecore XP 9.1.1: SC Hotfix 342567-1.zip
  • For Sitecore XP 9.2: SC Hotfix 352790-1.zip
  • For Sitecore XP 9.3, download and install the corresponding cumulative hotfix available in KB1001628.