Quick answer: Blend the ADS position and FOV smoothly on a consistent update, align the sight to the aim point, and keep the transition frame-rate independent.
ADS jitter is inconsistent blending of position and FOV. Smoothing it fixes it. Here is how.
How to fix it
1. Blend position and FOV together
Interpolate the weapon position and the camera FOV smoothly and in sync when entering and exiting aim. Mismatched or stepped blending makes the transition jitter or feel disconnected.
2. Align the sight to the aim point
Position the weapon so the sight lines up with where shots go at full ADS. A sight that does not match the aim point makes aimed fire feel wrong even if the transition is smooth.
3. Keep it frame-rate independent
Drive the ADS blend by time, not frames, on a consistent update phase, so the transition takes the same duration and stays smooth regardless of frame rate.
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.
Ship the fix, watch the signature disappear from the next build. That's how you know it's really gone.