Screen size and sensitivity setup

Choose the resolution you actually use

On Overview, select your game, then choose its screen size. Use the resolution of the display running the game. A 1440p monitor does not mean every game is running at 1440p.

For your primary display, open More setup & tips > Use main screen. For other displays or unusual resolutions, check the capture settings instead of assuming a standard preset fits. The monitor illustration shows the capture region; it is not a live screen preview.

Match sensitivity exactly

Copy your game's mouse sensitivity into Overview > In-game sensitivity. If the game says 4.00, enter 4.00. Save changes before starting. Repeat this separately for each game and whenever you change its sensitivity.

Mouse DPI and in-game sensitivity are different settings. Enter the game's sensitivity number in this field, not your mouse DPI. There is no single sensitivity setting that is perfect for every player.

Check your input devices

aimline scans device names on launch and tries to reuse your saved mouse and keyboard. If several devices match or a saved device is missing, select the intended devices and save. The app should not guess between indistinguishable devices.

Review the activation key and aim mode on Overview. Save changes after editing them. If a driver setup prompt appears, follow the included installer instructions and restart Windows.

If the capture or movement feels wrong

1. Stop the session and confirm the selected game profile.
2. Check the actual display resolution and capture source.
3. Use Borderless Windowed display mode.
4. Match sensitivity and the enemy outline color in both places.
5. Read Diagnostics before retrying. Marvel Rivals movement still requires calibration.

Only test in environments where you have permission. A practice range is not automatically exempt from a game's rules.