Hi, as requested, I'm dropping the crashlogs I mentionned in the curseforge comments.

We played with settings, we tried turning off multithreading of entities and tileentities and, basically, the mod was only stable if every features was disabled.

The logs are made with every config settings enabled, a fresh config file.

CRASHLOG_MCMT_TEST.txt

https://rentry.co/w9tca

Thanks for the great work, your mod seems very promising

Same here

I tried again in Single Player, with OpenJDK 11, I could only see the chunk under me and another one close by.
The chunks refused to load and the world would not Save upon quitting, it froze at the Saving world screen.

Switching to the bundled JDK seemingly resolved the chunks not loading issue, although chunk loading seems slower than without MCMT