I've used Synergy on both Windows->Windows and Windows->Mac. With a Macbook Pro 2015. It's really unpleasent due to constant stuttering, unless you connect to Ethernet. This is a known issue, it's appently due to airdrop. The OS switches the modem to a different channel to check for new devices or something, and then switches back. Although it does it fast enough to maintain network connections but anything real-time just looses control for a moment. Other wifi laptops seem fine. (Using same Wifi version)