What causes physics objects exploding from overlap?

Objects spawned interpenetrating each other or geometry are pushed apart with large force by the solver resolving the deep penetration, so they launch violently.

How do I catch this when it only happens for some players?

Capture it automatically from the player's device with the full stack trace, the device and OS, the build, and a breadcrumb trail of what they did. That turns a vague complaint into a specific, reproducible issue you can fix without owning the hardware it happens on.

How to Fix Physics Objects Exploding from Overlap at Spawn

Quick answer: Spawn objects without overlap, check for clear space before spawning, and clamp the maximum depenetration velocity so resolving any small overlap is gentle.

Physics explosions at spawn are the solver resolving overlap. Spawning clear fixes it. Here is how.

How to fix it

1. Spawn without overlap

Place spawned objects in clear space, not overlapping each other or geometry. The solver resolves deep penetration with large force, launching objects that started inside something.

2. Check for clear space

Before spawning, test that the position is free with an overlap check, and adjust or skip if it is occupied. This prevents spawning objects inside one another in the first place.

3. Clamp depenetration velocity

Set a maximum depenetration (separation) velocity in the physics settings so resolving any residual overlap is gentle rather than explosive, as a safety net for small unavoidable overlaps.

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.

The errors you never hear about are the ones quietly costing you players. Visibility turns them into a worklist.