Audacity 3.7.4 on macOS 15.5 Sequoia on a MacBook Pro M4 Max crackles very loudly when performing Short/Long Seek Left/Right (using left/right cursor keys).
The same version of Audacity on a macOS 15.5 Sequoia on a MacBook Pro M1 Max does not crackle. Buffer length and Latency compensation are at the same defaults on both machines (Buffer Length: 100 ms, Latency -130 ms.)
Further investigation showed the crackling only to happen with the internal speakers, not with headphones. Audio MIDI Setup showed that the Format for the MacBook Pro Speakers was set to 96kHz. Crackling ceased after setting it to 48kHz.