Aerie related stuttering

Hello,

I'm facing a weird stuttering issue in my current game. At first I couldn't pinpoint the reason but after reading some tipps from other players in other threads here I found out that Aerie causes them.
However the weird thing is that Aeries death resolves the issue but if I kick her out of my party it remains. Same thing when kicking her out after she's dead. Unfourtunately I can't kill her permanently with enough damage because one of the mods prevents partymembers from that.
I could deactivate this tweak but I don't want to mess with my otherwise stable installation.

Is there any way I can get rid of her?