[Oldrim] HDT - FPS drop on camera zoom

[Umbra Nensei]

The fps drop increases the closer I move my camera to naked female character (during sexlab scene or just standing idly in place). But if I put on clothing that is not HDT supported (has no physics at all), the fps dip disappears. Which is weird, because two years ago I've used almost the exact same setup and no such issues occured.
 

I'm sure it's none of the mods that have to do with character's hair, eyes or any facial features either. As soon as physics are disabled the fps drop is no longer there. I also run FNIS and Nemesis regularly, so it shouldn't be a problem either.
 

My guess is it's something to do with a few skeleton and physics mods I have active, but after fiddling around for 2h with MO2's resource priority, disabling and enabling, I just can't find the culprit.

I posted mentioned mods below. If someone could help me make sense of this mess to fix the issue that'd be great.

 

Spoiler

This is my exact mod priority in MO2 (left pane). The rest of active mods don't overwrite or influence these mods in any way.

 

82.          Nemesis
83.          FNIS
84.          SOS
85.          Sexlab framework
86-91.    (irrelevant, various slab animations)
92.          Sexlab aroused
93.          Blush when aroused
94.          Sexlab animloader
95.          BodySlide and Outfit Studio
96.          Calientes Beautiful Bodies Edition -CBBE-
97.          RaceMenu
98-100.  (irrelevant, racemenu plugins)
101.        XP32 Maximum Skeleton Extended
102.        CLAMS OF SKYRIM PROJECT Inni Outie Cbbe HDT Vagina 5.7
103.        HDT Physics Extensions
104.        Fair Skin Complexion for CBBE
105.        SexLab Tools v

 

Edited November 16, 2023 by Umbra Nensei