I've had my Venu 2S since July and have been very happy with it overall. The weather sent us on an indoor walk for the first time since I've had it recently. My husband used his recently purchased Venu 3 on the same activity. My watch was horrible on indoor walking, to the point I deleted the activity and tried Indoor Track with marginally better success and just edited the distance afterward. His was vastly more accurate and didn't drop out pace nearly as much as mine did.
Yesterday, I tried Indoor Walking at home to see if it would do any better. The first mile wasn't horrible -- logged 1 mile in around 24 minutes, which was slower than actual, but tolerable. The next 21 minutes, however, it only logged .29 miles with an average pace of zero. I was swinging my arms mightily, but it didn't seem to matter. Pace would go from 18 to 0 to 45, etc. We walk daily and get good data when using GPS, but apparently my accelerometer is just terrible.
It seems the Venu 3 is better on capturing indoor activities, but don't know if there's anything I can do to improve accuracy of indoor walking on the Venu 2 or not.
Thanks!