Minecraft chunk loading should always be this good or better, but it is only this good with optifine for now. And specific settings that aren't on by default I believe. : r/Minecraft
Chicken Chunks 1.8.+ Mod 1.18.2/1.16.5/1.12.2 – Minecraft Mods PC
Chunk Loaders Minecraft Mods - CurseForge
Chunk Loaders Minecraft Mods - CurseForge
Chunk Loader [1.19.4] Minecraft Data Pack
How to build a chunk loader for minecraft 1.19 - YouTube