Hi, Joseph Land. Thank you for analyzing the sound file.
I can see what you mean by 1 click noise, but that's no problem, I didn't even notice that!

As rharv mentioned, the hiss noise after the style and tempo change is the issue.

I checked my audio setting and it was WAS.
I changed to MME, but the same result.
I tried to change to ASIO, but the waning sign popped up. It says "No ASIO drivers are installed on your system."
So I changed back to WAS. Still hiss noise.

Regards,
Jazzutako