https://paste.dimdev.org/ocahusutib.mccrash
It crashes about 2 secs after the world is loaded.
After that it wont load at all unless I restard the game.

Also your java is really old
Java Version: 1.8.0_51, (Release date 14 july 2015)

https://paste.dimdev.org/ipanilibaw.mccrash
Updated java but still getting the same crash

Sorry, I should have replied earlier: outdated java isn't related to this @Ad-Blokker .

I haven't touched wire management for a while, the issue here is that the pipe wire system loads other chunks (or possibly the same chunk) while reading from NBT, which causes this issue in large wire networks as it can't load everything up at the same time.

Okay, so if I would load the world in with a lower render distance so less chunks get loaded, would that solve it?

AFAIK only the wire network size matters - when one chunk containing a wire is loaded then the entire wire network gets loaded. (So changing render distance would have no effect).

I am not sure, but I think something like a -Xss256M JVM argument might be a temporary fix.