Same issue. MacOS 11.2, and Xcode 12.4, on a MacBook Air M1. It has made Xcode unusable, can't click on anything or edit text. If it does work it works for a few seconds and then locks up again. I've tried deleting the Xcode cache, and deleting Xcode and then redownloading it from the App Store

Hopefully it will stick because I have wasted a tremendous amount of time around this issue, Carrione solution above about turning off connection to devices via network for me so far. After clearing my phone from the devices window I was able to connect and run my app on it again

If anyone else reads this, an answer was posted in another thread. Need to turn off Network Access in Devices and Simulators panel

I updated an iPad Pro to iOS15 beta to run the Canvas test on device and its the same thing, barely getting 1 frame a second

Unfortunately, same issue. I can't even wear my Apple Watch anymore. Had to turn it off and put it away to get any work done.

Hello. No I gave up. Not sure if Apple Media Services is actually supported or has just been forgotten

Thank you so much for your response and clarifying matters One more question if you don't mind I am able to create a BLE device that advertises itself as a Bluetooth SIG Service UUID such as: 180D - Heart Rate However, a different type would make much more sense for the product: 1826 - Fitness Machine Using that Service UUID does not show up under WatchOS > System Settings > Bluetooth Is there a reason only some Bluetooth SIGs Service UUIDs are allowed and some are not? A couple of WWDC videos say if this type of System Settings BLE connection is made on the Apple Watch, versus at the App level, the connection is more reliable, is able to connect in the background, and gets data sent more frequently. If our product though makes more sense under an Bluetooth SIG like 0x1826 how can I make that type of connection? Note: I'll make sure the guidelines are followed. Thanks for the link