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The Xcode Canvas Simulator (for Xcode 14 and even 15 ..beta 6) cause multiple springboard and diagnosticd processes to run at nearly 100% CPU , cause the MacBook M1 to heat. This happens every time.
This is usually triggered after the Canvas show an error which live previewing the code as I edit it.
I have tried clearing the derived data but it doesn't seem to help. This happens with all projects. I am unable to use live previews because of this issue.
The are often other processes with the string Poster in them. Like PhotosPosterProvider , CollectionsPoster , ExtragalacticPoster running high on usage at the same time.