Spirit with any skin eat my FPS in Nintendo Switch/ Demogorgon invisible portals.

Cvz

Hi, here is my problem, when I play as a survivor, everything is good, but, when the killer is the spirit with any skin (for example, the spirit with uniform) I have to play with 15 FPS, I don't know why this only happens with her. If the spirit is using the normal skin, I play with 30 FPS (the normal fps in switch) but if she is using other thing, no matter what, my fps go down from 30 to 15.

Also, in Yamohaka map, the closed portals of the Demogorgon are invisible, but the sounds still there, when the killer open the portals, they are visible. I don't know if this happens in other maps.