[Bug?] Can’t Hear Browser Source Monitoring – Stream Hears It, I Don’t (Tried Everything)

Tizissoul

New Member
Hi everyone,


I’ve been using OBS with browser-based Sound Alerts for years. Everything always worked fine — the sounds played through stream and I could hear them via monitoring on my HyperX Cloud II Wireless headset.

But recently (after a break and GPU driver update), I noticed:


❗ Problem:​

  • Viewers hear all alert sounds
  • OBS shows activity in the mixer
  • But I don’t hear them anymore via Monitoring
  • The issue affects all Browser Sources
  • Media files do work with monitoring!

✅ What I’ve tried (none worked):​

  • Set “Monitor and Output” on affected sources
  • Explicitly selected HyperX Cloud II Wireless as Monitoring Device (not “Default”)
  • Disabled NVIDIA HDMI audio + VoiceMeeter
  • Ran OBS as admin
  • Clean reinstall of OBS including user settings
  • Tried disabling/enabling “Control audio via OBS”
  • Tried rebuilding scenes & profiles
Only workaround:
Disabling “Control audio via OBS” lets me hear the sound (via Desktop Audio), but I lose all source separation.


System Info:​

  • OBS 31.0.3 (64-bit, Windows)
  • Output device: HyperX Cloud II Wireless (default)
  • No active audio filters
  • No active VoiceMeeter routing
  • Windows 10 fully updated
  • GPU: NVIDIA RTX series (latest driver)

Does anyone know if recent OBS changes or a Windows/NVIDIA update could have affected browser source monitoring?

Any help or suggestions would be massively appreciated!

Thanks in advance.
 
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