Giant Monolith Structures and Unfinished Appearing Terrain

Hello! I recently installed DH with a few other mods listed in photos. I am having this strange generation where unfinished floating world and tall structures are appearing, upon reaching these places in my singleplayer world they appeared to be mountains that are not looking as they should with DH from a distance. I did use Big World mod for world generation. The world was pregenerated with chunky at first before I joined the discord server and read that faq that said not to do this. I attempted to start another chunk generation in a separate save and rendering with just DH as recommended but was getting the same results. If anyone knows how to resolve this I would greatly appreciate it!