Footsteps sound which is annoying

Anybody else have this weird efect, it's like an oversampling going on i guess, but i find it very annoying. If you hold a note on the high end of the guitar , anything past the 12th fret on the high E string, i hear like an oversampling going on which is very annoying, it's like footsteps with the note. You hear it espescially with gain overdrived sounds.

Thanks but not the same as in the aliasing problem, but i've been narrowing down the problem though, it's not from the Kemper which is a good thing, I plug in from the anolog outs and my problem is gone or with my headphones directly from the Kemper headphone out, no problem but when i go out the S\pdif outs, that's when i hear those footstep or clapping sound. Now to see if it 's my interface that is creating this problem, or the Kempers s\pdif out. I will try it on my other interface , my Lynx S\pdif inputs to see...tomorow

Thanks, i did not know the KPA had to be Master, been playing like this for a week and i would hear this annoying noise when i soloed in the high end and thought "i knew the kemp was too good to be true" and that I had found a problem !!!! Now it is close to perfection !!!!
Thanks for the help

Yeah toys for men !!! Happy endings the girlfirend doesn't object to !!!! I bought this thing to just try out with the option to return it , well i still have it and it's not going back !!!! Damn Kemper !!!