Now this I had never seen happen before with Recurrent Complex.
This happened while exploring a new world, world froze for about 2mins while spamming this in the console:

Several times this:
https://gist.github.com/Sereath/1667d880d0f57cebe21056bb01e0b715

https://gist.github.com/Sereath/3b33b1510e2afe1b054bdf92cd74d0b3

Compressed full logs, otherwise they are 46-114 MB big.
hbm-recurrent_logs.zip

My current HBM cfg files, I actually have most of the overworld gen disabled except for the ores and the non-explosive gas bubbles:

hbm_cfg.zip

Modlist for reference:

https://gist.github.com/Sereath/1d55acca52a799d3ab4a1044c18530e1

I have same issue, but with BoP and HBM only. Maybe BoP has some problems.

I am still having that same issue without BoP. Huge lag caused by it.

Confirmed with BoP and NTM only. Crashes the server.