Maybe, since what you uploaded sounds like it has 2 or 3 effects that cause delays and echos... could you please save a version of the patch without the octave fuzz, hall verb, and whatever else was diagnosed as a culprit by the helpful people in this thread, and upload it again? If, in fact, you can still hear the effect with the patch like that. cuz you said it happens without that stuff in there... so take the stuff out and try again.
Cuz that's quite a bit of help you got already, which is free from a very cool user. Maybe that awesome person will help one last time if you send the dryest patch you got that still, to your ears, has some kind of echo going on.
but from my experience (limited LoL), i think maybe it is from something else outside of your patch. like maybe you have something routed wrong? like i had mine connected to my computer with usb, and sound was coming out in real time and also like with a little echo, and it turns out it was the way i had the settings on the pc wiht driver delay or something.