When you test a controller for stick drift, you get a number: 1.5%, 4%, 12%. But what does it mean, and at what point should you do something about it? This guide explains how drift is measured, how games hide small amounts of it, and when the figure is worth acting on.
How stick drift is measured
A controller reports each stick's position as two numbers, one for left and right and one for up and down. Each runs from −1 to +1, with 0 at dead centre. Push the stick all the way right and the left-right value reads 1. Let go, and it should come back to 0.
Drift is how far from 0 the stick sits when you're not touching it. Testers usually show it as a percentage of full travel. A stick resting at 0.05 is 5% of the way to the edge.
My free stick drift test measures the distance from centre in any direction, so a stick resting slightly up and to the left gets one figure, not two.
Why no stick reads exactly zero
Every stick rests a little off centre. The sensors inside aren't perfect, the springs that return the stick to centre have a little play, and the controller reports position in small steps rather than perfectly smoothly. A PS5 DualSense, for example, reports stick position in fairly coarse steps, so a reading can jump by just under 1% at a time.
So a small offset is normal, even on a new controller. The question is whether it's big enough for a game to notice.
What a dead zone is
Games ignore small stick movements around the centre. That ignored area is the dead zone. If your stick rests inside it, the game treats the stick as centred and nothing moves. Once the resting point is outside the game's dead zone, things start moving on their own: that's drift you can see.
Dead zones vary a lot between games. Some are generous, some are small, and many games let you change the size in their controls settings. That's why the same controller can drift in one game and be fine in another.
There are two kinds you'll see mentioned:
- Inner dead zone: the area around the centre that's ignored. This is the one that hides drift.
- Outer dead zone: the area near the edge that's treated as full travel. It matters for sticks that don't quite reach the edge, not for drift.
Raising the inner dead zone in a game's settings hides minor drift. It's a workaround, not a fix: the stick still isn't centring properly, and a larger dead zone makes aiming feel less precise.
What the numbers mean in practice
On my tester, each stick gets a verdict as well as a figure. The bands are currently:
- Healthy: under 3%. Normal. Games won't notice it.
- Minor: 3% to just under 5%. Many games hide this with their dead zone.
- Noticeable: 5% to just under 10%. You'll probably see it in menus and when aiming.
- Severe: 10% and above. Things move on their own in most games.
I'm calibrating these bands against controllers on my bench, so they may shift slightly as I gather more readings. I'll update this guide if they do.
Why the same stick can give different numbers
A stick doesn't always come back to the same place. Push it up and let go, and it may settle slightly differently than when you push it left. That's why my tester tests each stick three times, after pushing it in different directions, and shows the range.
The pattern matters as much as the number:
- The same offset every time, in the same direction: classic drift, usually a worn sensor. It tends to get worse.
- A different offset each time: the stick isn't centring consistently. That's usually the centring spring, play in the mechanism, or dirt. In games it shows as occasional creep after certain movements.
The verdict uses the worst of the three readings, because in a game that's the resting point that causes creep.
When to do something about it
- Healthy: nothing to do.
- Minor: keep an eye on it. Raise the game's dead zone if it bothers you, and try cleaning around the stick.
- Noticeable: try the free fixes: dead zone, firmware update, recalibration on Xbox, cleaning. If it's consistent and doesn't improve, the stick is worn.
- Severe: the free fixes rarely last. Replacing the stick is the proper fix.
I replace drifting sticks on PS5 and Xbox controllers by post, with standard, Hall effect or TMR replacements. See my controller repairs.
Questions people ask
What percentage of stick drift is normal?
A small offset, a couple of percent, is normal on any controller, including new ones. Games hide it with a dead zone.
Is 5% stick drift bad?
It's around the point where many games start to show it, especially when aiming. Try the free fixes first. If it stays at that level or gets worse, the stick is wearing.
Does increasing the dead zone fix drift?
It hides it, which is fine for minor drift. It doesn't fix the stick, and a large dead zone makes small movements less precise.
Do Hall effect sticks have drift?
They use magnetic sensors instead of the parts that wear in standard sticks, so they're designed to resist drift from wear. They still have a small resting offset like any stick.
My recommendation
Don't worry about a small figure. Test both sticks, look at the verdict and whether the drift is consistent, and act when it's noticeable or getting worse.