Is your feature request related to a problem? Please describe.
When the auto-save is performed the persistent states (command storages used in /data ... storage) are saved which can cause significant lag when used heavily.

Describe the solution you'd like
It would like it to be saved asyncronously when performed in the auto-save so it won't lag out the server.

Describe alternatives you've considered

Additional context
I'm talking about the ServerWorld#saveLevel method which saves the persistant states synchronously.
This doesn't occour in paper due to their IO rewrite.(https://github.com/PaperMC/Paper/blob/f4c7d373e4a1aff23539fe099745bf29a28559b9/patches/server/0999-Write-SavedData-IO-async.patch#L79)
With the [ioSystem].replaceImpl you can't see this in spark reports but it still lags.

Mojang Ticket: https://bugs.mojang.com/browse/MC-270159

This would be great, since for some reason this lags my server a bunch (more than 5seconds for a single tick)