atention, new world required to work properly

I made some small fixes and some big changes to the modpack.

small changes:

removal of mods that prevented the game from performing better.
improved chunk generation.
fps in flight improved also with elytra.
resourcepack optimized for graphics.
Improved terrain generation.
structures that were in conflict were removed, more structures are now automatically generated more frequently, making the experience more immersive and with more action.
Optimization of neutral entities

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