On the same seed the terrain is much less rough than when it is written in the seed box. The picture is of the world with the seed put in and both are on the world type "Overworld Two".

Hmm, this is a really interesting issue! Thanks for the report :)

Hello, I had this issue too. Took the time to take a look at the level.dat of a normal Overworld Two world and compared it to one where I typed the same seed :)

The first thing I noticed is that the generator type of the overworld and nether is set to minecraft:noise and not overworld_two:overworld_two. Changing it to the correct value fixes the roughness but yields different terrain and biomes since it seems like a few other parameters are different as well.

Hi! Version 1.0.2 on curseforge should fix this. Please let us know if the issue persists. Sorry for the inconveniences!

Oh cool! Spot on timing! It's working perfectly now, thanks!