For those with Linux who are experiencing lots of lag when loading chunks, try the following:
open the console while in game and enter the following command:

set engine.worldgen.trust_manifest true

See if that makes it faster.

You can enter the command "man engine.worldgen.trust_manifest" to see what this variable does if you are curious.

If it does, you can place `set engine.worldgen.trust_manifest true` in `Input/Scripts/program_startup.txt`