Quick answer: Match the model to the game: dedicated servers for competitive integrity, listen servers for cheap co-op, and P2P with relays only where authority and cost allow.
The networking model decides your cheating exposure and your hosting bill. Choosing deliberately matters. Here is how to decide.
How to fix it
1. Weigh integrity needs
Use server-authoritative dedicated servers where cheating and fairness matter most.
2. Weigh cost and scale
Consider listen servers or P2P for casual or low-stakes modes where hosting cost dominates.
3. Plan for the hybrid
Many games mix models per mode; design so the authority boundary is clear in each.
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 backend 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.