Chunks dont load fully
I just updated my DH and now the some mountains looks like that. I also updated Iris with curseforge but still
Solution
Yeah. If you press F3, under the Distant Horizons heading there should be something like "migration" followed by a number. That number will be going down, albeit slowly. Once it's done, it'll disappear. It only needs to be done once, but might take several hours depending on how big the database is. Best thing to do is put yourself somewhere safe and leave your computer on for a while until it's finished.
