Crackling sound in lmms project

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https://lmms.io/lsp/?action=show&file=9057
Link to the mmpz file.

Ok, i am using the peak controller in this project, when it is in operation there is crackling sound that you can hear, problem is this shows up when you export to wav.

I am sure some of you guys have seen this issue before and what do you think causes it and is there any solutions to this?

Thank you. :D
i will look at this afternoon.
Ok thanks Musikbear, i hope your experience in lmms can shed some information on this problem. :D
<blushing> ... I forgot -Sorry
Today i promise

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oky .. sorry for forgetting you!
The reason is the movement of the dial, and it is increased by the frequency in the LP filter. Together that makes a nasty artefact :/
But you can use other sidechaining methods, that does not move the volume dial. Either the ones i suggests in this video
https://www.youtube.com/watch?v=ntzWiufjkko
or you can use the one Umcaruje made a tutorial on, only last week. It does turn a dial, but it is in the compressor, so i dont think it will matter, but i did not test!
Thanks musikbear, i will try the first option with a side chain channel