Talented groups, or simply groups whose members you like, but with music that you just can't get into, despite trying many times.
For me it's VIVIZ, I always loved GFRIEND but VIVIZ discography, despite a few good songs, has been far below what the members deserve.
I also wish I liked I.M (Monsta X)'s solo stuff a bit more, since I really like Joohoney and Kihyun's music, but I can't get into it either.