Volume surge in crossfade

Is it my setup, or is crossfading hopelessly broken? While I have crossfade enabled, there is either a volume surge, or a burst of noise at the final moment of the crossfade. For example, if the crossfade is set to 10 seconds, the glitch will be at the last second, or so, of the transition. I'm running LMS v.7.9 series on Windows 10, feeding RPis running HiFIBerryOS. I'm not seeing anyone else complaining about it, so is it my setup, and if yes, is there anything I can/should do to make it work right?

Thanks