Quick answer: Raise Max Real Voices in the Audio settings if the platform allows, set Priority correctly so key sounds win, and pool/limit repetitive one-shots so they don't crowd the budget.
In intense moments some sounds just don't play. Unity caps concurrent real voices and steals from the lowest-priority sources, dropping whatever it considers least important.
How to fix it
1. Tune the voice budget
In Project Settings > Audio raise Max Real Voices within your platform's limits so more sounds can play at once.
2. Set source Priority
Give critical cues a lower Priority number (higher priority) so Unity steals from ambience and chatter first, not from gunshots or alerts.
3. Cap repetitive one-shots
Limit how many copies of the same SFX play simultaneously; dozens of identical footsteps eating voices is the usual culprit.
Catching the ones you can't reproduce
The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.
Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.
This is where a tool like Bugnet earns its place. Its SDK captures every Unity error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.
Reproduce it once with full context and the fix writes itself. The hunt is the expensive part.