Server Snapshot Performance Backports

NOTE: This mod is currently archived as there haven't been any performance optimizations to backport in the recent time

Backports server performance improvements for the latest release from the latest snapshots.

Details about the optimizations can be found in the changelog.

Motivation/Why does this mod exist?

Snapshots (e.g. 24w33a) can contain extreme performance improvements for servers.
However it may take months until we see these improvements finally shipped in a release.

This mod contains selected extracted improvements from the snapshots and backports them into the latest available release.

1.21.1 Idle CPU usage comparison

Before / Without mod:

After / With mod: