WARP CAUSES DOUBLE-CLICKS AT SAMPLE START

Hi guys, having huge trouble with importing my own loops into Clip-Mode. Everytime I start a loop with WARP activated I can hear a short double-click (very fast repeating of the first transient), which is annoying. This double-click is repeated everytime the SEQUENCE loop starts over.

that also the timing of the loops is totally messed up with active WARP. All my loops are playing together nicely without WARP, but as soon it's activated, the loops get out of timing. Even if the loop tempo matches the song tempo.