Reply to Xcode Canvas Simulator cause multiple diagnosticd processes to run and 100% CPU Same issue. Xcode 15 and 15.0.1 have this issue. Sonoma 14.0 and 14.1 makes no difference. The Simulator not only takes up a huge amount of CPU, but a huge amount of RAM. Crazy. Has no one at Apple noticed this?? Developer Tools & Services Xcode Oct ’23