How do I prevent memory leaks in my game?

Free what you allocate: destroy objects when done, remove references and event subscriptions, unload unused resources, and avoid retaining objects unnecessarily, so memory stabilizes over a session instead of growing. A leak is memory allocated and never freed, causing usage to climb until the game runs out and crashes (an out-of-memory crash after extended play, the leak signature). Common leak sources: objects created but never destroyed, event subscriptions or references not removed (a frequent cause, something holds a reference preventing cleanup), resources/assets loaded but not unloaded, and collections that grow without bound. To prevent leaks, ensure everything you allocate gets freed when no longer needed, and profile memory over a long session to confirm it stabilizes (rises to a footprint and stays) rather than growing. Bugnet captures out-of-memory crashes with memory context and breadcrumbs, so you can confirm a leak (crashes clustering after extended play, with high memory) and, after fixing it, verify per version that the out-of-memory crashes dropped, confirming the leak is resolved for real players, complementing the profiling that confirms memory now stabilizes.

Why does my game stutter from garbage collection?

Because your game allocates memory frequently (especially per frame), building up garbage that the runtime periodically collects in pauses that hitch the frame, a leading cause of stutter in managed-memory engines. If you allocate in hot paths that run every frame, creating objects, strings, or temporary data each frame, the garbage accumulates and triggers periodic garbage collection, and each GC pause causes a frame to take too long (a hitch), recurring as garbage builds and gets collected. The fix is reducing per-frame allocations: avoid allocating in update/render loops, pool reusable objects (reuse rather than create-and-destroy), reuse buffers and collections, and avoid hidden allocations (some operations allocate behind the scenes). With little per-frame garbage, GC runs rarely and lightly, eliminating the stutter. Bugnet captures performance data including frame-time consistency, so you can confirm your game has GC stutter (periodic frame-time spikes) and, after reducing allocations, verify per version that frame times became consistent on real devices, confirming your allocation reductions actually eliminated the GC hitches players experienced.

Why does my game run out of memory on some devices?

Because those devices (usually budget or older ones) have less RAM than your dev machine, so a memory footprint or leak that fits comfortably on your high-RAM hardware exceeds their limited memory and crashes them. Out-of-memory crashes cluster on low-RAM devices because they have far less headroom: the same memory use that is comfortable on your machine can cross the limit on a budget phone, and the system kills the game (an out-of-memory crash). This is invisible on your dev machine (which has the RAM to absorb the footprint), so these crashes only show on the low-RAM devices, which you may not own. The causes are an oversized footprint (too much baseline memory use for low-RAM devices), a leak (growing usage crossing the limit faster on low-RAM devices), or load spikes. The fix is reducing memory use to fit low-RAM limits: optimize assets, load only what is needed, fix leaks, and offer scalable settings. Bugnet captures out-of-memory crashes with device and memory context, so you see the crashes on the low-RAM devices you cannot reproduce on (your high-RAM machine never crashes), identify the cause, reduce memory use, and verify per version the crashes dropped on those devices, fixing a problem you literally cannot see on your own hardware.

Common Memory Management Mistakes

Quick answer: The biggest memory management mistakes are leaks, per-frame allocations, and an oversized footprint, fix these by freeing what you allocate, pooling objects, and fitting low-RAM limits.

Memory mistakes cause crashes, stutter, and poor performance on the devices most of your players use. Here are the most common memory management mistakes and how to avoid them.

Leaking Memory

The most common memory mistake is leaking, allocating memory and never freeing it, so usage grows over a session until the game runs out and crashes (an out-of-memory crash after extended play). Leaks come from objects not destroyed, references not removed, or resources not unloaded.

The fix is freeing what you allocate: destroy objects when done, remove references and event subscriptions, and unload unused resources, so memory stabilizes instead of growing. Bugnet captures out-of-memory crashes with memory context and breadcrumbs, so you can confirm a leak (crashes clustering after long play) and verify per version that fixing it stopped the crashes.

Allocating Memory Every Frame

A second mistake is allocating memory in hot paths that run every frame (creating objects, strings, or temporary data per frame), which generates garbage that triggers periodic garbage collection pauses, causing stutter. Per-frame allocations are a leading cause of frame-time hitches.

The fix is reducing per-frame allocations: pool reusable objects, reuse buffers, and avoid creating garbage in hot paths, so garbage collection runs less and lighter. Bugnet captures performance data including frame-time consistency, so you can see stutter and confirm per version that reducing allocations smoothed it.

Having an Oversized Footprint for Low-RAM Devices

A third mistake is a memory footprint sized for your high-RAM dev machine that exceeds the limited RAM of the budget and older devices many players use, causing out-of-memory crashes on those devices that you never see. The footprint that fits your machine overwhelms low-RAM hardware.

The fix is fitting low-RAM limits: optimize assets, load only what is needed, and offer scalable settings, so the game fits the oldest devices you support. Bugnet captures out-of-memory crashes with device and memory context, so you see the crashes on low-RAM devices (invisible on your machine) and verify per version that reducing the footprint stopped them.

Avoid the big memory management mistakes: leaks, per-frame allocations, and an oversized footprint. Free what you allocate, pool objects, and fit low-RAM device limits.