I have read through other similar posts just in case the issue has been solved yet but i haven seen any that was exactly like mine. I'm using the newest release version 2.4.5-b for 1.20.1. both client and server have it. i have pregenerated all chunks with chunky and with distant horizons for LoDs by mistake as i didn't know how to configure the pregeneration to generate Chunks. Anyways the server has the Distant Horizon Data around 3gb for 500 chunk radius. Server and thus Clients are capped to 256 chunks. When i join the server and go into F3 it says that "Server has full DH support" but the server doesn't send any LoDs to the clients, they usually have to generate them themselves. An example would be when my friends joins and enables distant horizons he has to generate all LoDs as if he was in singleplayer. I don't think it is because the transport is capped as i didn't change the configs that much from their base values. Also it doesn't load no matter how long you wait. I have also set to LoD generation mode to PRE-EXISTING CHUNKS only and that might be the issue but i pregenerated all 500 chunks of LoDs and chunks so i don't know how i can fix this issue. One idea is maybe it's because of the serverkeyprefix or something with the connection as i am using playit.gg tunnels. And also im using it in a modpack if that makes a difference.