Quick answer: Profile and split worst-case GPU work, update engine and drivers, and use player-side crash telemetry to separate your-workload cases from bad-hardware cases.

Device-hung means Windows shot the GPU driver because something took too long. Your heaviest frame is the prime suspect; player hardware variance is the confounder. Here is how to untangle it.

How to fix it

1. Find your longest GPU events

Profile with ProfileGPU/Unreal Insights at the crash-correlated moments (level transitions, big VFX, streaming spikes) — single events approaching tens of milliseconds on high-end become seconds on low-end.

2. Split and scale the work

Chunk huge compute or draw passes, cap particle counts and shadowed lights by quality tier, and precompile PSOs so first-use shader spikes do not stall the queue.

3. Correlate crashes with hardware

Telemetry showing DEVICE_HUNG concentrated on one GPU family or driver version turns 'random crashes' into a driver advisory or a targeted workaround.

4. Advise the affected players

For overclock/thermal cases, a support article (stock clocks, driver update, temperature check) resolves the reports your code cannot.

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 Unreal Engine 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 bug you can't reproduce isn't gone — it's just invisible until you capture it from the player's device.