Just got my Soundcore 2 delivered today and tested the aux input with a 3.5mm cable from my computer to the speaker, no delay noticeable when playing from youtube or playing games. But for some reason when I plug in my guitar directly to the speaker, there's about 0.25s delay involved. This delay exists whether I have bluetooth on or off. With another bluetooth speaker I have, Jawbone JAMBOX, I don't have any delay when doing the same test. Is there a fix for this or is it just an inherent problem with this speaker?