Only in certain song Renoise freezes when loading or even moving certain FX

Hi, I have a song and when I move certain effects or try to add that type it crashes.
It does NOT happen with other of my songs using the same FX. The FX seem to be Verbsuite from Slate, Decapitator from SoundsToys amongst others, all external party. They work fine in other songs. Sometimes If I even dare to move an existing instance of for example Verbsuite, it will start to freeze. No error log is written, it just freezes and Windows asks if you want to continue waiting for it.
I would really like to be able to “fix” this song.
Thanks for any input!