Possible stale Master Bank mixer metadata after switching Master Banks in Unity

FMOD Studio
1

Hi,

We have a Unity/FM​​OD issue where mixer settings only apply correctly after connecting FMOD Studio Live Update.

Environment:

  • Unity 6.3 LTS (6000.3.14f1)
  • FMOD Studio 2.03.14
  • FMOD for Unity 2.03.14

Steps / result:

  1. Set the Music/BGM bus fader to -inf dB in FMOD Studio.
  2. Build banks.
  3. Run Unity without Live Update.

Expected:
The BGM should be muted.

Actual:
The BGM still plays. As soon as we connect Live Update, the BGM is immediately muted and the latest mixer routing/fader settings are applied.

Notes:

  • FMOD Studio audition works correctly.
  • Existing snapshot events work in Unity.
  • The affected BGM does not use sends/returns.
  • We previously used two Master Banks:
    • resources.bank: temporary Master Bank for pre-patch/download-screen audio.
    • master.bank: main Master Bank loaded after patching.
  • We changed resources.bank to a normal bank and left only master.bank as the Master Bank, but the problem remains.
  • Patch-screen BGM also ignores the saved BGM VCA mute setting, while main-game BGM respects the same setting after entering the game.

Could switching between temporary and main Master Banks in the same FMOD Studio System cause stale mixer/routing/VCA metadata? Is a single Master Bank for the full application lifetime the recommended setup?

Thank you.