Back in December some Android Wear 2.0 users were experiencing some short-duration lags or freezes when it came to using their wearables. Turning off the “Ok Google” hotword detection feature seemed to have fixed the problem temporarily. Now, the company has finally been able to remedy this without having to resort to that solution. To get the fix, you’ll need to have version 7.18.50 of the Google app installed.
Source: GSMArena