Sluggish Animations while turning off/on Wi-Fi or Bluetooth.

Have you rebooted your Mac? If not, that's the first step. If that does not return the animations to their normal state, then see if the problem is present when you boot in safe mode. That process performs some system cleanup and clears caches, and also disables 3rd party extensions that may cause problems.

Start up your Mac in safe mode - Apple Support

If that does not correct the issue, test in a new user account. A newly-created user account will have all settings at default, and if the issue does not occur in that new account then it provides guidance on what may need to be changed to correct the issue.

Add a user or group on Mac - Apple Support

Once the testing is complete, the new account can easily be deleted.

Delete a user or group on Mac – Apple Support

Those steps will help to isolate the problem.

It might help to download and run EtreCheck, written by a long-time forum member. The free version is fine. Post the full report using the Additional Text button. No personal information is revealed. 

Note that the current version of macOS is 27.2. Based on your post you are running an older version, so you should update your Mac to the current version.

See: Update macOS on Mac - Apple Support

Personally, I cannot replicate the issue you describe – the toggles for Wi-Fi and Bluetooth move at their usual (fast) pace.