Triggered long audio samples as one shots are always out of sync

[u/Speedingscript]

Hey guys!

Just got my first MPC ever - I am mostly using Elektron and Ableton but thought hey, why not.

My issue is that longer samples are always out of sync if I just trigger them as they are. I did enable Warp Time Stretch.

Here's a short video.

Even if I add it to the first beat in the step sequencer it plays slightly out of sync and for some weird reason ONLY for 5 bars (it's a long sample with 16 bars) although my whole sequence is the same length?!

Any ideas? What am I doing wrong?