video sync problem with iPhone 7

[Yellowjacketboss302]

Hi Harry,
With iPhone 7 (IOS 10) and HLT version 20.2.2 my video is very out of sync.
In the video when I an right at the start finish line, the "count down" number is at 7. So it doesn't indicate I am at start/finish until about 7 seconds later.
Start/finish on the track map looks right.
I am driving at Barber Motorsports Park.
With my previous iPhone 5 setup the video sync was just about perfect.
Anything setting adjustments I can try?
Thanks.
Jim

[Harry]

Please make sure this is reproducible first. Usually you will see lap times starting at 1 to 2 seconds (for the first lap) due to the video startup time. I doubt a 7 seconds delay is something we will see for the iPhone7 in general.

In addition, please clarify on "out of sync". Is the problem the video and data are not in sync in general or is it really only about a late start?

- Harry

[Yellowjacketboss302]

Hi Harry.
The problem is not repeatable. The video started late AND was out of sync badly during a track day on 11/5/16.
However, on 11/19/16 the video worked as you described -- started about 2 seconds late on first lap, but synced about 1 second late.
On 11/20/16, the video started a bit late, but synced almost perfectly on subsequent laps.
I will continue monitoring the behavior.
Thanks.
-- Jim