Performance Booster option is missing after update to Plesk Obsidian 18.0.52

Symptoms

The option Performance Booster is not available after the update to Plesk Obsidian 18.0.52 under Tools & Settings > General Settings.

Cause

The feature is being rolled out gradually so there is a probability that the feature is not enabled on your installation yet.

Resolution

The feature may be enabled manually.

1. Log into Plesk.

2. Add the following lines to the Plesk panel.ini file:

   [ext-performance-booster]
   enabled=1

3. Save changes.