# Consistent 192ms delay between parameter change and audible output in Profiler (Unreal + FMOD Studio)

**URL:** <https://qa.fmod.com/t/consistent-192ms-delay-between-parameter-change-and-audible-output-in-profiler-unreal-fmod-studio/24603>\
**Category:** Unreal Engine\
**Created:** [November 11, 2026, 6:01am UTC](https://qa.fmod.com/t/consistent-192ms-delay-between-parameter-change-and-audible-output-in-profiler-unreal-fmod-studio/24603 "2026-11-11T06:01:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dbunt1](https://avatars.discourse-cdn.com/v4/letter/d/f4b2a3/32.png) [@dbunt1](https://qa.fmod.com/u/dbunt1)\
**Post date:** [November 11, 2026, 6:01am UTC](https://qa.fmod.com/t/consistent-192ms-delay-between-parameter-change-and-audible-output-in-profiler-unreal-fmod-studio/24603/1 "2026-11-11T06:01:33Z")

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**SOLVED**

Some audio assets in the same event were set to streaming.

- -

**Setup**

- Unreal Engine 5.8.2, FMOD Studio 2.03.14

- Windows, Audio Output: [WASAPI]

**Problem**

I’ve been experiencing a delay between Unreal triggering a parameter change and actually hearing the audio. In Profiler, I can see the parameter value change, and the audio waveform for the event doesn’t appear until 192ms later. Across 9 triggers in one recording, the gap was exactly 192ms every time.

**The event**

- The sound is a short 2-pop, one instrument, set to play as soon as the parameter changes via trigger condition.

- Parameter seek speed is 0, no AHDSR attack, no leading silence in the file, no instrument trigger delay or start offset, no quantisation

- Streaming asset is off

**FMOD init settings**

- DSPBuffer Length: 0, DSPBuffer Count: 0 (so FMOD defaults)

- Studio Update Period: 0 (default)

**Questions**

1. With default buffers, is ~190ms from parameter change to audio onset expected, or should I look for something in the event setup?

2. Does the Profiler stamp the waveform at the mix point or after the DSP buffer queue? In other words, does a constant offset between parameter change and visible audio include DSP buffer latency?

Thanks!

**Update** #1:

Delay reduces to a consistent 182ms when reducing Buffer:

[DSP Buffer Length: 512, DSP Buffer Count: 2, Studio Update Period: 10]

**Update** #2

A plain Play Event reaches the speakers in 16-54ms, but the same sound triggered through Parameter Change and Trigger Condition on the instrument shows a constant ~180-190ms in the Profiler.

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<div class="post-metadata">

**Author:** ![dbunt1](https://avatars.discourse-cdn.com/v4/letter/d/f4b2a3/32.png) [@dbunt1](https://qa.fmod.com/u/dbunt1)\
**Post date:** [November 11, 2026, 6:21am UTC](https://qa.fmod.com/t/consistent-192ms-delay-between-parameter-change-and-audible-output-in-profiler-unreal-fmod-studio/24603/2 "2026-11-11T06:21:16Z")

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If there are any audio assets in the event that are set to streaming, every instrument in the event will be significantly delayed.