Mouse is over-sensitive in games on the client

Written for Synergy 3 (v3.7.2) and Synergy 1 (v1.21.4), checked 3 October 2026.

Operating system: Windows, macOS, Linux

When gaming on a client computer, the mouse may be far too sensitive, or the cursor may accidentally switch to another computer.

To fix this, first turn on relative mouse moves.

Synergy 3

1. In the sidebar, click Keyboard & mouse.
2. Turn on Relative mouse moves. The change is saved straight away.

Synergy 1

1. On the server computer, click Configure Server.
2. Click the Advanced tab.
3. Tick Use relative mouse movements.
4. Click OK to save the settings.

Still switching computers?

Lock the mouse to the client by pressing the Scroll Lock key (ScrLk on some keyboards), and press it again to unlock. For more, see: How to lock the cursor to a computer?