I'm playing a modpack that includes this mod, and when I get near one of the lush forests on my map I get the following errors in console and a drop to 1-5fps

[23:56:45] [Server thread/ERROR]: Unknown structure piece id: valley:tide_pool
[23:56:46] [Worker-Main-5/ERROR]: Signature is missing from textures payload
[23:56:50] [Server thread/ERROR]: Unknown structure piece id: valley:tide_pool
[23:56:50] [Server thread/ERROR]: Unknown structure piece id: valley:research_station

As this mod doesn't appear to have a config file I cannot tell for certain that these structures are from this mod, so if not I apologize. From the valley:tide_pool one it seems like it at least. Else these 2 structures don't seem to have proper ids

1.2.0 has been released. https://www.curseforge.com/minecraft/mc-mods/lush-forests/files/3633498

Oh great, thank you!

I'm on 1.1.0 fabric as part of a modpack so can't update unfortunately. I'll let the modpack authors know. It looks like the fix beyond 1.1.0 isn't released yet?

On some more searching it was actually the massive amounts of tropical fish that spawn around in the biome, the error above is unrelated to the lag. A /kill showed 9.5k entities killed, all the fish died, and the lag disappeared. Not sure if this is still something within the scope of the mod

Those structures aren't from my mod, what version of the mod are you playing? In the latest version, the fish lag has been fixed.