[1.12.2] [Hexxit II modpack] Low TPS + High CPU & RAM usage

[jongames]

https://github.com/xJon/Hexxit-II/issues/177 I posted here first before I determined it might be a Dimensional Doors mod problem.

I used timings to show that there are 16287 dropped items in a chunk when having the bad performance.
I did a command to kill dropped items due to the server going to high CPU usage and 10+GB of RAM. Most of the result showed: item.item.world_thread which seems to be related to the Dimensional Doors mod https://ftb.fandom.com/wiki/World_Thread .

I am unsure if it happened in previous versions but I did not notice this occurring before when I was on DimensionalDoors-3.0.9-287 so I believe this is a new problem now that I upgraded to DimensionalDoors-1.12.2-3.0.12 along with the Hexxit II modpack update 1.4.1. I do not see any errors in the logs dealing with Dimensional Doors.

[xJon]

@TheComputerizer who generously worked on the last few patches of the mod for 1.12.2 might have a better idea what's happening, although could also be caused by https://github.com/DimensionalDevelopment/DimDoors/pull/297 or a SpongeForge incompatibility?

[TheComputerizer]

It's probably due to the fact that wild rifts eat blocks and drop world thread now. You can actually specifically disable dropping world thread from the config until I figure out how to fix that