@whale-av Thanks. asio4all did help with the onboard soundcard. However my external audio interface doesn't output anything when I select asio4all. The device is selected and shows to be active in the asio4all control panel, but I can't get any sound out. I managed to reduce the crackling choosing ASIO 2.0 here though, but not eliminating it entirely.
I'm using a new computer and pd outputs crackling noises as soon as anything is sent to a dac~. It's pd vanilla, zexy as only external. The new computer runs Windows 11, i7 64bit. I tried several audio interfaces, all produce the same issue. Even with the simplest one osc~ patch for testing. I tried all different audio settings (sampling rate, ...), nothing helped. I reinstalled pd. Still no change. The problem is not the patch or the audio interface. Are there known issues with Windows 11? Any other ideas? Thx for helping.