Attached Link: Nerd's freebies

Since you're working in P4, I'd say it's the infamous crosstalk issue. Try to find so-called NULL figure - it's something which is not visible in the scene, but you load it between loading crosstalking figures to prevent them from messing each other's morphs.

Nerd made one, should work for V2/M2. It's called Cross Talk Fixer. You have to register on his site to get the freebies.

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Outdated gallery over at DeviantArt

Fics at FanFiction.net and Archive of Our Own (AO3)