Bad performance and connection resets

[Chapropolpro]

I tried to run bareiron on doit esp32 devkit v1 (2 core 240MHz) and esp32-c3 supermini (1 core 160MHz), and both have same issues:

1. If render distance >1, client may get an error "connection reset" after connecting to server or after death. Also if second player tries to connect, both will get this error and disconnect.

If render distance = 1 situation gets a lot better.

2. Chunk render time takes up to 10 seconds, and if player breaks something during generation, he might get error "connection reset" (50/50 chance, i think). Same thing applies while second player is trying to connect. Also while second player is connecting, there is a chance for already connected player to disconnect.