During high load situations, Sitecore XP instance might end up in thread starvation, which can cause the website to become unresponsive.
To resolve the issue, consider one of the following options:
Be aware that the hotfix was built for a specific Sitecore XP version, and must not be installed on other Sitecore XP versions or in combination with other hotfixes. In case any other hotfixes have already been installed on a certain Sitecore XP instance, send a request for a compatibility check to Sitecore Support.
Note that the ZIP file contents need to be extracted to locate installation instructions and related files inside. The hotfixes must be installed on a CM instance and then synced with other instances using standard development practices.