Dear Everyone with Clicking.
This sounds ghastly-familiar. I think whoever did the loop for this patch didn't loop it properly, so the 'click' is a tiny bit of noise on the start/end of the loop. Think of it like a scratch on an old-style LP. When it's got the graphics going as well, the loop slows down (cos of CPU usage) so the click will get louder and last longer. When there's less graphic usage, the click will be quicker and fainter!
Unless whoever designed the loop re-does it with the fade-in-out of the loop edited more carefully, there's not a lot you can do about it EXCEPT....
Re-do the sound as a Soundfont. Get Audacity. Record a short segment of the loop going up and down the scale of C, one loop per note. CAREFULLY fade in and out on the beginning and end of the loop, using Audacity's controls (it's got FADE IN and FADE OUT in its EFFECTS menu.) Play it back on loop in Audacity to make sure there's no clicking. Then export each note into a folder when you know it's click free.
Go to anyconv.com/sf2-converter. Upload the notes. And download the resultant soundfont! You should now have a soundfont with all the sounds going up and down the scale of C, no clicks.
Why C? Because you should be able to do all the sharps and flats without the sound 'sounding weird'. I'm not an expert in this, I just discovered if a sound moved too far away from its origin, it started sounding stupid-weird. So I used the scale of C and as it's only moving half a note away from the starting sound at any given time, you can get away with it. I've got a whole library of orchestral sounds from posh demo downloads by doing that.
Hope the above helps. Dunno why they missed the click in that one when they were creating the plugin. Pretty sure that's what it is though - they didn't get their loop right. Think this thing's a Maizeplayer. Maizeplayers work on loops.
Yours respectfully
Chris.