>>535838062
What sorts of errors? Load order/duplicate files? Can't help you with CS specifically because I use ENB, but I have both Skyland AIO and Vanaheimr parallax packs enabled with no issues. PGPatcher should ask you to prioritize the mod to use for parallax generation. It'll also note that you have textures from both mods, but it's a warning, not an error, and it just overwrites the lower priority ones.

Parallax can be worth it if you like looking at scenery. I personally love it, but admittedly when I'm properly playing the game, I don't notice the effect all that often.