Quick answer: Narrow the Auto-Cloud root and file patterns to only true save data, exclude logs and temp files, and prefer the Steam Cloud API if you need explicit conflict handling.
A conflict dialog on every launch usually means your Auto-Cloud globs are syncing files the game rewrites constantly. Steam cannot reconcile two machines both touching a log, so it asks the player.
How to fix it
1. Scope the path patterns
In the Steamworks Auto-Cloud config, point the root at the save folder only and use specific patterns like *.sav rather than *, so caches and logs are not synced.
2. Exclude volatile files
Add exclusion rules for log files, crash dumps, and lock files. These change every session and produce phantom conflicts between machines.
3. Switch to the Cloud API for control
If you need deterministic merge behavior, disable Auto-Cloud and use the ISteamRemoteStorage API so your code decides which save wins.
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 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.