I seem to recall you not liking Xasthur, but The Funeral Of Being is pretty unsettling. The fact that two tracks are titled Intro, and neither start the album tells you you're dealing with someone who's a bit off. Also, Blood From The Roots of The Forest Part 2 precedes part 1. The general feel, the ambient tracks, the vocals, production, abrupt song ends, etc. give this album a disturbing feel. Unfortunately, the first two tracks are weak. So I'd recommend starting with the 3rd and going from there. Maybe sample Sigils Made of Flesh and Trees. It's a creepy song.
I think it's easily the most disturbing Xasthur release, and it's much easier to hear than Nocturnal Poisoning.
You might also want to check out the Manes demos from 92-95. It's where Xasthur clearly takes a ton of inspiration.