Hello Aternos Team,
can you please add the Mod " ChunkPurge"?
Link to the mod: https://www.curseforge.com/minecraft/mc-mods/chunkpurge
this mod basically unloads chunks that aren't loaded by chunk loaders and players who aren't in them or near them. it reduces the ram load because it can unload chunks which is very handy when your trying to reduce lag. i personally like this mod it helps with lag and reduces the ram usage
it does this by only unloading isolated chunks that aren't still linked to chunk watchers aka players.