it wont load the LOD's when i use alexs caves

Can confirm, I'm guessing it crashes the renderer but it doesn't throw the error on the client. Don't see it either on the logs side. It's once again the biome cave lighting option. Disable it in the config and DH will work. It's already logged on DH so I think it's only a matter of time before it gets fixed again.

Can also confirm I'm having the same issue here. This only happens when Alex's Caves is enabled.

Same issue. Alex Caves is not compatible with Distant Horizons

In order to make LOD work again in latest versions you need to turn off 'biome_ambient_light_coloring' in the client config of alex caves. (Work in 1.20.1 with both mod last version).