I seem to be having the exact same issue but on Xcode 15.2, my project is also a watchOS only build, the validate button is grayed out and I cannot upload via TestFlight & App Store option. Did you learn anything about the required configuration?
jaclu
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
I've also encountered the same behavior with startDeviceMotionUpdates(using:to:withHandler:) on an Apple Watch Series 6 running watchOS 10.3, Xcode 15.1.
Depending on how you set the deviceMotionUpdateInterval it seems to result in either significantly slower sampling rates or occasionally accurate or somewhat faster sampling rates.
I measured the average interval for deviceMotionUpdateInterval = 1 ... 100 hz on the Apple Watch Series 6. When inaccurate, true rates seem to be ~either 30% or 40% slower or 10% faster. I'm trying to run an FFT on the signal, so accurate sampling rates are critical. Has anyone else discovered why this is the case and whether there are any workarounds?