What is the best mouse and keyboard sharing software?

As bartels wrote, its your network link causing the interruption. I use ethernet cable and never had a interruption. If you are on WLAN you may want to check RF reception

ShareMouse depends on a local network connection. Please check our troubleshoot tips to resolve network issues: http://manual.keyboard-and-mouse-sharing.com#ts or contact support at http://support.keyboard-and-mouse-sharing.com

Hey! Do you know if that's a general issue or just something you've experienced?