hi there, I also played with the sampler module, try to trigger the sampler with shorter impulses, that made the crackes disappear in my case, though I had a different preset setup as you, I was trying to trigger the sampler into audio range, that worked well with a bit of tuning, unfortunately the start time parameter is control not audio or mod domain, so I was not able to build a wavetable synth with my beloved h8000 😉