Thank you all for helping me!

I've noticed that I don't really hear the "noise" when editing and playing in BB2025.
The "noise" appears when rendered.
I suspect that the issue is in the rendering process, but not the drums swirl.

I'm asking for technical help from PG music at the moment. I'll let you know when I find out what's going on.

I don't think it's my laptop because I don't have any sound noise issue with other software.
Also when I installed BB2025 in my old laptop, it made the same noise when rendered as well,
whereas BB2018 doesn't.

Regards,
Jazzutako