I have seen some supporters having issues with the Tentacle bra scene when changing the female character. I had problem with crashes while working on the scene too but I thought it was just on my end so I didn't pay attention to it.
I can only assume it has something to do with one of the mods or the character card being corrupted in the working progress causing said crash.
The temporary fix i found was to load your character card into studio first after launching then load the scene after. You should be able to change the character without it crashes your studio.
I think whatever the problem was, it caused the studio to not be able to render new object and crashes so doing this will allow the new object to render first before loading up the scene.
Sorry for the inconvenience that this causes, and thank you for reading