Stream is choppy when no video flag is added

[cyberdude]

When I try to disable the video in the ffmpeg vcParams the audio is choppy.

tasks: [
  {
    app: "live",
    vcParam: ["-vn"],
    hls: true,
    hlsFlags: "[hls_time=2:hls_list_size=3:hls_flags=delete_segments]",
    dash: false,
    // dashFlags: "[f=dash:window_size=3:extra_window_size=5]",
  },
],

Is there a way to only do audio only streams?