# Scatterer causes "PlaylistInstrumentInstance::startFullLengthHook : Attempting to schedule a sound in the past, this could cause inaccurate playback" spam
**URL:** https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657
**Category:** Unity
**Tags:** unity
**Created:** [January 18, 2021, 12:17pm UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657 "2021-01-18T12:17:17Z")
**Posts on this page:** 6
**Page:** 2
### Author:  [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)
#### Post date: [December 6, 2023, 3:54am UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657/22 "2023-12-06T03:54:19Z")
Historical reasons, primarily Direct Sound output mode. We do intend on changing this but we will need to wait for a major release.
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### Author:  [@torley-gallium](https://qa.fmod.com/u/torley-gallium)
#### Post date: [December 6, 2023, 4:28pm UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657/23 "2023-12-06T16:28:57Z")
@cameron-fmod Ah I see! And am I correct in understanding “schedule delay” needs to be set via code and there’s not a flag in the FMOD Studio GUI?
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### Author:  [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)
#### Post date: [December 6, 2023, 9:20pm UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657/24 "2023-12-06T21:20:19Z")
That is correct, it needs to be controlled via code. But this is just a work around and we plan to have this fixed for the next major FMOD version.
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### Author:  [@torley-gallium](https://qa.fmod.com/u/torley-gallium)
#### Post date: [May 20, 2024, 7:22pm UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657/25 "2024-05-20T19:22:08Z")
@cameron-fmod Can you please confirm if this was indeed fixed in FMOD 2.03? I didn’t see it under an obvious name in [https://www.fmod.com/docs/2.03/studio/welcome-to-fmod-studio-new-in-203.html](https://www.fmod.com/docs/2.03/studio/welcome-to-fmod-studio-new-in-203.html) and would like to check on its status.
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### Author:  [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)
#### Post date: [May 21, 2024, 3:38am UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657/26 "2024-05-21T03:38:57Z")
I can confirm that it has been fixed in 2.03, it was actually a fix in the [Studio API](https://www.fmod.com/docs/2.03/api/welcome-revision-history.html):
> Studio API - Fixed looping playlist instruments displaying a warning when using a DSP buffer size of less than 1024.
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### Author:  [@charliehess](https://qa.fmod.com/u/charliehess)
#### Post date: [May 23, 2024, 2:43pm UTC](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657/27 "2024-05-23T14:43:27Z")
We are also seeing this problem with a scatterer instrument with a few samples.
The _only_ thing that made this go away was increasing the DSP Buffer from 512 to 1024. Everything else had no effect.
(Sorry, missed the fix version as 2.03).
[Previous page](https://qa.fmod.com/t/scatterer-causes-playlistinstrumentinstance-startfulllengthhook-attempting-to-schedule-a-sound-in-the-past-this-could-cause-inaccurate-playback-spam/16657.md?page=1)