The basis of any operating system design comes down to meeting the users’ demands. Operating systems evolve in order to accommodate the emerging requirements proactively. The modifications involve both current system updates and new version releases. Every new version being rolled out is, technically, a major system update to an extent. For instance, macOS Catalina is a new operating system build superseding macOS Mojave and representing a major system update.
Any significant software platform update is likely to entail a range of issues. Evolution is not just about developments and improvements. It is also about trial and error. Luckily, macOS, just like any other managed system, evolves under its developer’s umbrella. Inconsistencies, bugs, and vulnerabilities are inevitable in a rapidly changing environment, but close monitoring and testing are to come up with patches fixing the weak links and deficiencies.
Slow Safari, similarly to other performance issues following Catalina update, is a problem reported by quite a few users. Some cases require no or very limited involvement of a user or expert. Others cannot be sorted out unless specific fixes are applied. Outdated hardware is a standalone case.
How do I fix slow Safari on my Mac?
Wait until the updating is complete
Should you see a notification stating that slow Safari and other performance issues are due to Mac update being in progress, there might be no reason to worry. Once the update process is completed, normal or even improved performance restores. Since a lot of users encounter sluggish Safari performance following the upgrade to macOS Catalina, it might be just that they overlooked a relevant notification.