Quick answer: Have the matchmaker send periodic queue position and estimated-wait updates, display a live counting timer, and reflect search-criteria widening so players see progress.
Staring at an endless spinner with no idea how long the wait is makes players quit the queue. The UI just needs the matchmaker to report position and an estimate, plus a live timer, to feel like something is happening.
How to fix it
1. Send queue position and estimate
Have the matchmaker periodically push the player's queue position and an estimated wait derived from recent match-fill times so the UI has real data to show.
2. Show an honest live timer
Display elapsed time counting up and the estimate, updating the estimate as conditions change, rather than a static spinner that conveys no progress.
3. Reflect criteria widening
When the matchmaker relaxes skill or region constraints to fill faster, surface that as searching wider so the player understands why and that a match is getting closer.
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 HTML5 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.
A crash you can name from its stack trace is a crash you can usually fix in minutes.