# 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.