Quick answer: Limit weather particles to a volume around the camera, use screen-space or cheap shader effects for wetness, and scale weather quality with settings.
Weather performance problems are particle counts and full-scene shaders. Bounding them fixes it. Here is how.
How to fix it
1. Bound particles to the camera
Spawn rain and snow only in a volume around the camera, moving it with the player, rather than across the whole world. A few thousand particles near the camera read as a storm without simulating the entire map.
2. Use cheap wetness effects
Full wet-surface shaders across every material are expensive. Use a screen-space wetness pass or a cheaper shared effect, and apply snow accumulation selectively, rather than a costly per-material weather shader everywhere.
3. Scale weather with settings
Tie weather particle counts and effect quality to the graphics settings so lower-end hardware runs a lighter version. Weather is often the biggest variable cost; scaling it keeps frame rate playable.
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.
Most of the time the fix is small. Seeing the failure clearly is the part that actually costs you.