We have fixed the wifi mouse lag bug on macOS!
Download Synergy 1.9 here:
Contact us if you don't have S1:
List of bug fixes and enhancements:
v1.9.0-rc3 - Updated 10th May 2017
Bug #4132 - Laggy mouse cursor on macOS clients
Bug #5901 - Stored serial key corrupted on macOS
Bug #5757 - Failure to build against OpenSSL v1.1.0