It always happends, even if i dont have anything else loaded in the project. However i do have to use the plugin before anything happends. Loading samples into it seems to be hardest for it.
Heres af FLP where it happend
https://we.tl/t-FKWeXjJpRe
Hm, using both your flp and wav, I can't reproduce a 100% CPU. Sometimes, very long samples can cause problems, but your sample here seems fine.
What CPU do you have?
Thise one:
Intel(R) Core(TM), i7-4770k CPU @ 3.50GHz 3.50 GHz