I repeated the same issue with another Apple ID on our team — it worked before conversion to a managed account, but not after. So I'm guessing something is broken with app-specific passwords in managed accounts. I was able to get the upload working by switching from app-specific passwords to API keys. In Users and Access > Integrations > Keys > App Store Connect API > Team Keys, I created a key, and passed the --apiKey, --apiIssuer, and --p8-file-path arguments to altool.

Cautiously optimistic...I've been running Sonoma for a couple of days, with the usual memory pressure, and haven't heard it cutting out yet.

I've discovered that I can trigger this glitch consistently by running "sudo fs_usage bash". You can replace "bash" with the name of any running process. (Although I don't recommend running random sudo commands that you find on the internet, this one just displays which files are being used by one of the running processes). Not sure if this is at all useful....just thought I'd point it out.

I'd be interested to know how many people experiencing this issue have tried @Milos23's suggestion of removing any Intel audio plugins from /Library/Audio/Plug-Ins/HAL, and also reducing the number of Intel processes you're running — and whether it helped. For me this hasn't completely solved the issue, but it seems to have significantly reduced its frequency.

@Milos23 Interesting. I also have an old audio plugin in that directory, DVCPROHDAudio.plugin. Going to remove it and see what happens.

I've been experiencing the same issue on my 2022 M1 MacBook Pro (with OS 12.3.1, 12.2, and previous versions). Based on this thread, I started searching Console for "CAReportingClient", and an entry like this appears consistently every time I hear the glitch. I've noticed it on Spotify and Music.app. It seems to happen most often when I close a Chrome tab.    CAReportingClient.mm:508  message {   "HAL_client_IO_duration" = 1087958;   HostApplicationDisplayID = "com.spotify.client";   cause = PageFaultsOnIOThread;   deadline = 124749382;   "input_device_source_list" = "";   "input_device_transport_list" = "";   "input_device_uid_list" = "";   "io_buffer_size" = 512;   "io_cycle" = 9713;   "io_cycle_budget" = 12358250;   "io_page_faults" = 1;   "is_prewarming" = 0;   "is_recovering" = 0;   "issue_type" = overload;   lateness = 8;   "other_page_faults" = 34;   "output_device_source_list" = Headphones;   "output_device_transport_list" = BuiltIn;   "output_device_uid_list" = BuiltInHeadphoneOutputDevice;   "safety_violation" = 1;   "sample_rate" = 44100;   "scheduler_latency" = 11093791;   "smallest_buffer_frame_size" = 512; }: (   1782411428173 )