OpenProject 4.0.8 has been released which contains a performance bug fix. We advise everyone to update their OpenProject installation.
In OpenProject 4.0.7 some projects reacted very slowly when the project contained project members which had a lot of memberships. This error occurred especially in OpenProject instances with a large number of projects. Since this error significantly reduced the usability, it has been fixed in OpenProject 4.0.8. (#18889).