Choppy audio with HEVC playback

Playing an HEVC file (Main10) with Vorbis audio, audio playback is extremely choppy. Similarly with AAC audio on another clip. Playing over HDMI, works fine in other Pi4 2Gb configs (LibreELEC/Kodi).

Thoughts?
-Bill

Can you let me know which video file this is by email? I might take a look locally and try to find out why that might happen.