Developer "jakeday" is pretty well known in the Nexus community for bringing roms that make these devices run even smoother than they would with stock AOSP alone. His latest build is for the LG G Watch and is made to bring you "Android Wear the way it should be". Features include improved battery life, reduced lag between screens, improved overall performance, increased vibration intensity, and other goodies. If you want your LG G Watch to perform even better than it already does head to the link below for the download and full Rom Changelog.
Via Rootzwiki