I see nearly unplayable lag, it may have something to do with being near penned animals. The lag occurs after editing voxels/opening doors. It appears to be related to generating the visible mesh.
I've also noted a few times where the visible mesh for a section would not generate. I may have seen this before 1.2.3. The Lag is definately a 1.2.3 issue.
Bought the game on Switch to play online, and can't because of this issue. Tried all the fixes and nothing works. I just get put in an infinite loop of remoteconnect codes. Ridiculous that this isn't fixed yet.