I think it might have just coincided with a recent update to either the Moto software or Android Wear. I notice the same thing on my V20. It doesn't happen all the time, but it's happening a lot this week. The phone gets the notification and the watch sometimes takes 30 or 40 seconds to get it.
I used the 360 on an S7 Edge and a Note 7 without issues before, so I don't think it's the phone.