Editor metronome plays late

[ghost]

Type

Game behaviour

Bug description

With this beatmap ARForest _ nayuta - Imaginary Arcadia (noneistaken).zip (please rename to .osz extension!) in the editor, the metronome ticks around 20ms to 30ms late.

Some notes:

• The audio file in the beatmap has ZERO milliseconds of offset. I verified this with REAPER (a DAW) both visually with a spectrogram and its built-in metronome. This is set accordingly for the one and only timing point in the beatmap. There is no ~negative 20ms offset like on beatmaps timed with osu!stable.
• The latency in osu!lazer's metronome ticking is found visually through REAPER. Top two channels are of the original mp3 file, bottom two are from a recording of the game's audio. Green line marks a downbeat in the song, and the grey overlay rectangle is the gap between the downbeat and when osu!lazer actually played the downbeat tick sample. I specifically picked a downbeat, as the tick sample that plays in other beats has 5ms of effective silence at the beginning.
• The attached video has the beatmap BPM set to 2x to make the latency more obvious.

System info: I am on Artix Linux, using JACK audio output at 48000Hz, two channels, 256 samples/period. I explicitly set the audio output in osu!lazer to "JACK Audio Connection Kit" and verified that game audio was actually going through JACK.

Screenshots or videos

https://files.catbox.moe/8445uc.mp4 (around 65.2MiB, GitHub does not allow files over 10MB)

Version

2023.419.0.0

Logs

database.log input.log network.log performance.log runtime.log

[ghost]

Related:

• https://github.com/ppy/osu/issues/18909
• https://github.com/ppy/osu-stable-issues/issues/306
• https://github.com/ppy/osu/issues/18652
• https://github.com/ppy/osu-framework/pull/5248

[ghost]

I compiled osu and osu-framework with BASS's AsyncFile flag removed from all platforms and this still persists it seems.

[peppy]

You can adjust your universal offset in settings to fix this, game-wide.

It's due to per-system latency differences in audio playback.

[ghost]

due to per-system latency differences

Is it? Changing the period size or using a different audio output (like PulseAudio) does not make this latency higher or lower. I thought this delay would be mitigated in something like a metronone already.

adjust your universal offset

This works but it also makes the editor metronome and hitsounds in beatmaps from osu!stable sound too early, which makes sense because they are always timed around 20ms early.

[peppy]

Period doesn't affect sample playback latency.

Also if it's any consolation, I am looking into issues with the platform offsets currently (specifically that it seems incorrect on non-windows platforms), so please wait until I finish work on that before opening issues regarding timing. You can track this at https://github.com/ppy/osu/issues/21947.

[ghost]

Alright, much thanks.