# Assetto Corsa Evo

## Connection Method

**Shared Memory** — DR Sim Manager reads telemetry from Assetto Corsa EVO's shared memory interface at up to **200 Hz**. No setup or configuration is needed.

## Setup Steps

1. Launch **Assetto Corsa EVO**.
2. In DR Sim Manager, select **Assetto Corsa EVO** from the Source list.
3. Click **Start Motion**.
4. Enter a session and drive — telemetry starts automatically.

No plugins, configuration files, or network settings are required.

## Available Telemetry

AC EVO provides good telemetry data, though its shared memory interface is newer and has some differences from the original Assetto Corsa:

* **Orientation**: Pitch, Roll, Heading (Yaw)
* **Acceleration**: 3-axis G-forces (lateral, longitudinal, vertical)
* **Velocity**: Calculated from world-space velocity (transformed to local frame)
* **Angular Velocity**: Calculated from orientation changes between frames
* **Speed**: Vehicle speed (from speedKmh, converted to m/s)
* **RPM**: Engine RPM
* **Gear**: Current gear (0=reverse, 1=neutral, 2+=forward)
* **Suspension**: 4-wheel suspension travel
* **Vehicle Name**: Read from static session data

### Telemetry Quality: ★★★★☆

AC EVO uses a different shared memory layout from the original AC. Local velocity and angular velocity are not provided directly — DR Sim Manager calculates them from available data. The result is very good but slightly less smooth than native local-frame data.

## Recommended Starting Settings

* **Primary Cue Gain**: 60–90%
* **Smoothing**: Medium — helps smooth the calculated angular velocity
* **Washout**: Medium

## Known Quirks

* **Calculated velocity and angular velocity**: Unlike the original Assetto Corsa, EVO's shared memory does not include local velocity or angular velocity fields. DR Sim Manager calculates these from world-space velocity (rotated to local frame) and orientation deltas between frames. This works well but may benefit from slightly more smoothing.
* **Gear numbering differs from AC**: EVO uses 0=reverse, 1=neutral, 2+=forward gears (unlike AC's standard numbering).
* **Early Access**: As AC EVO is in early access, the shared memory layout may change with updates. DR Sim Manager will be updated to match.

## Troubleshooting

### No telemetry data

* Ensure AC EVO is running and you are in a driving session.
* AC EVO must be version 0.6 or later for shared memory support.
* Restart both AC EVO and DR Sim Manager.

### Motion feels rougher than expected

* Since angular velocity is calculated from frame-to-frame orientation changes, try increasing the smoothing slightly in your profile settings.
* Ensure your frame rate is stable — inconsistent frame timing can affect the smoothness of calculated values.


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