Samples stutter / miss beats when game is not focused

[Haspamelodica]

Type

Cosmetic

Bug description

If the lazer window is unfocused, the metronome from the editor's Timing screen sometimes misses beats. I'm not sure if it's related, but the metronome also seems to fall behind over time. If the window is focused, everything is running fine.
I also played around with the frame limiter; it doesn't make a difference.

Screenshots or videos

Initial D - Running In The 90's

Missed beats 14 (00:05), 21 (00:09), 42 (00:16):

2022-10-13.16-04-55.mp4

Stellamaris - Stage of Star

Missed beats 24 (00:08), 48 (00:15), 63 (00:20), 76 (00:24), 89 (00:28):

2022-10-13.16-13-20.mp4

Version

2022.1008.2

Logs

Initial D - Running In The 90's

network.log
performance.log
runtime.log
updater.log

Stellamaris - Stage of Star

network.log
performance.log
runtime.log
updater.log

[Haspamelodica]

Further experimentation: I could reproduce this on any map I tried (10 or so), except toby fox - Quiet Water because it only has 32 beats in total. [EDIT: Could reproduce even on that map.] This includes maps with:

• tempo changes: Galaxy Collapse
• low BPM: Muse - Unintended (70bpm)
• high BPM: Big Black (360bpm)

[integerrr]

This is intended afaik as the game reduces fps on all threads including audio when unfocused, the same happens in gameplay with hitsound if you unfocus the game

[Haspamelodica]

Is it really intentional that the game misses metronome clicks and hitsounds if it's unfocused? I think it would be better to just play them a bit late or early, if that's feasible.

[gustarmartins]

This also happens when game is running low on FPS.

[peppy]

Is it really intentional that the game misses metronome clicks and hitsounds if it's unfocused? I think it would be better to just play them a bit late or early, if that's feasible.

You're welcome to tweak the algorithm and see how it feels. You may then find that the reason for it not being done is that it sounds worse playing random out-of-time sounds as opposed to not playing at all. Changing to test it out is a very simple code change.