add first patch

config/servercore/optimizations.yml

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+# Allows you to toggle specific optimizations that don't have full vanilla parity.
+# These settings will only take effect after server restarts.
+
+# Prevents many different lagspikes caused by loading chunks synchronously.
+# This for example causes maps to only update loaded chunks, which depending on the viewdistance can be a smaller radius than vanilla.
+reduce-sync-loads: true
+# Can significantly reduce the time spent on chunk iteration by caching ticking chunks every second.
+# This is especially useful for servers with a high playercount and / or viewdistance.
+# Note: The list of ticking chunks is only updated every second, rather than every tick (but that is very unlikely to matter).
+cache-ticking-chunks: true
+# Can significantly reduce time spent on mobspawning, but isn't as accurate as vanilla on biome borders.
+# This may cause mobs from another biome to spawn a few blocks across a biome border (this does not affect structure spawning!).
+fast-biome-lookups: true
+# Fluid random ticks, like lava spreading fire, are run twice each game tick.
+# Enabling this will cancel the 'duplicate' second fluid tick, but this may cause slight behavior changes.
+cancel-duplicate-fluid-ticks: false