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Aim Tuning

Mouse sensitivity, DPI, report rate, curve editor overview, and controller dead zone settings for ReaSnow S2.

1: Curve Editor
2: Deadzone Settings

This section covers everything related to mouse aim tuning on S2 — from basic sensitivity setup to the 50-point curve editor and dead zone configuration.

Before You Tune

Get these fundamentals right first:

Setting	Recommendation
Mouse DPI	4000–16000 (5000 recommended)
Mouse Report Rate	250–1000 Hz (500 Hz recommended)
Mouse Acceleration	OFF (disable in mouse software)
In-Game Sensitivity	MAX (let S2 handle the curve, not the game)

Set your mouse to the recommended DPI and report rate using your mouse manufacturer’s software or onboard DPI button before connecting to S2.

Sensitivity Parameters

These are adjusted in the APP’s Mouse Advanced Settings page.

Parameter	Range	Default	Description
HIP Sensitivity	1–5000	Per-config	Sensitivity when not aiming down sights (hip-fire)
ADS Sensitivity	1–5000	Same as HIP	Independent sensitivity when aiming down sights
Vertical Ratio	10%–200%	100%	Vertical sensitivity as a percentage of horizontal
Minimum Speed	0–100	0	Ignores mouse movement below this threshold — filters out micro-jitter

⚙️ Advanced: HIP and ADS each have independent sensitivity values. This lets you keep fast turning while hip-firing and a slower, more precise speed when scoped in.

Response Curve

S2 uses a 50-point Catmull-Rom spline curve that maps physical mouse movement to in-game stick output. Each point is a control node you can drag to reshape the response.

Learn how to use the curve editor in detail: Curve Editor

Dead Zone

If your aim drifts when you are not touching the mouse, or the crosshair moves too abruptly from a standstill, adjust the dead zone. This is also where you fine-tune the controller stick dead zone for authentication and gameplay.

Full reference: Deadzone Settings

Aim Assist

S2 offers two aim-assist algorithms for games that benefit from stick-acceleration-style reticle friction:

Option	Behavior
A	Standard assist curve
B	Alternate assist curve — try this if A feels too aggressive
Off	No aim assist applied

⚠️ Warning: Aim assist behavior varies by game. Test both options in your game’s practice range before committing to one.

Saving Your Settings

All aim parameters are automatically synced to S2’s RAM as you adjust them. To make settings permanent across power cycles, tap Save to Flash — otherwise changes are lost when S2 powers off.

1 - Curve Editor

50-point Catmull-Rom curve editor with 5 presets, free-hand drag editing, and per-game curve recommendations for ReaSnow S2.

The curve editor maps your physical mouse movement to in-game stick output. A well-tuned curve makes aiming feel natural — the crosshair moves exactly where you expect it to.

How It Works

S2 samples your mouse movement and translates it through a Catmull-Rom spline curve with up to 50 control points. The X axis represents physical mouse speed; the Y axis represents the stick output sent to the console. Each point is an anchor you can drag to reshape the response.

5 Preset Curves

Start from a preset, then fine-tune. Tap any preset to load it onto the canvas.

Preset	Shape	Best For
Linear	Straight diagonal line	Default — stick output scales 1:1 with mouse speed. Start here if unsure.
Slow Start	Shallow ramp, steepens later	Precision at low speed — ideal for sniping and long-range tracking
Fast Start	Steep initial ramp, flattens later	Quick flick turns, close-quarters combat
S-Curve	Gentle S-shape	Balanced — fast flick with a precision zone in the middle
Custom	Your own shape	Start from any preset, then drag points to create your own curve

Editing Controls

Action	How To
Drag a point	Touch and drag any control point on the canvas
Add a point	Tap an empty spot on the curve to insert a new control node
Reset a point	Double-tap a control point to snap it back to default
X/Y Axis Lock	Lock horizontal or vertical movement for fine adjustment of one axis
Swap X/Y	Mirror the curve across the diagonal — unused for most setups, available for edge cases

Axis Options

For specialized scenarios, you can lock or swap the response axes:

Option	Effect
X Lock	Vertical adjustment only — curve affects Y-axis output
Y Lock	Horizontal adjustment only — curve affects X-axis output
Swap X/Y	Exchange X and Y axes — the curve editor applies to the opposite axis

💡 Tip: Most players leave both axes unlocked. Use axis locking only if you need different horizontal vs. vertical response — e.g., reducing vertical bounce during anti-recoil macros.

Per-Game Recommendations

Each official Game Config ships with a recommended curve tuned for that specific game. When you install a Game Config from the library, the curve is included automatically.

To see what curve the config recommends, open the curve editor after loading the config — the preset and point positions reflect the author’s tuning.

2 - Deadzone Settings

Stick dead zone and trigger threshold configuration for ReaSnow S2 — per-game differences, inner/outer dead zone, and precise numeric input.

Dead zones define how much physical movement is ignored before S2 begins outputting a stick or trigger signal. Properly tuned dead zones eliminate drift, reduce unwanted movement, and make stick response feel consistent across different controllers.

Controller Stick Dead Zone

Two controllers can have their dead zones configured: the authentication controller (plugged into USB1) and the main controller (USB2–4).

Parameter	Range	Description
Inner Dead Zone	0–100	Movement below this threshold is ignored. Higher = more stick movement required before output starts.
Outer Dead Zone	0–100	The maximum position before the stick is considered fully tilted. Lower = reaches 100% output sooner.

Authentication vs. Main Controller

Controller	USB Port	When to Adjust
Guide (Auth)	USB1	If the authentication controller’s stick is visibly drifting on the IO Monitor
Main	USB2–4	If your gameplay controller’s stick feels too sensitive or not responsive enough at the edges

Trigger Dead Zone

Configure the inner and outer dead zone for analog triggers (L2/R2) on connected controllers.

Parameter	Range	Description
Trigger Inner Dead Zone	0–100	How far you must pull the trigger before output begins
Trigger Outer Dead Zone	0–100	How far before the trigger reaches 100% output

Trigger dead zones are useful for games where you want a hair-trigger response (lower inner dead zone) or need to prevent accidental trigger activation (higher inner dead zone).

Numeric Input

Every dead zone slider supports precise numeric entry. Tap the value to open an input box and type the exact number you want — no need to guess with the slider.

Dead Zone Shape

For the main controller sticks, choose between two dead zone shapes in the Game Settings page (alongside keybinding configuration):

Shape	Behavior
Circle	Equal dead zone in all directions. Best for most games.
Rectangle	Independent X and Y thresholds. Useful for games with strong horizontal-vertical aim asymmetry.

💡 Tip: Start with Circle and a low inner dead zone (5–10). Increase only if you notice stick drift on the IO Monitor.

Per-Game Differences

Different games interpret stick input differently. A dead zone that works for one FPS may cause sluggish aim in another. Always test after changing:

Open the IO Monitor to see real-time stick values.
Move the stick to the edges — verify both X and Y reach 100%.
Release the stick — verify both axes return to 0.
Adjust the inner dead zone up if values do not settle at 0, or adjust the outer dead zone down if values do not reach 100%.

⚠️ Warning: Setting the inner dead zone too high can create a “jump” when the stick passes the threshold. Keep the inner dead zone as low as your hardware allows.