The differences between build numbers in the screenshot are okay. Checking version info (secondary mouse click) over the ios beta 4 platform provided the following information: iOS 17.0 beta 4 (21A5291f) SDK + iOS 17.0 beta 4 (21A5291g) Simulator (Installed), which clarifies the difference. So there was no issue with that. My apologizes for the confusion.

For me, none of the workarounds above work in Xcode 15 RC either... Simulators have been damned slow in each beta, but at least some workarounds made them run smoother.

Command fails with "File Doesn't Exist, Will Create:…". It happens even after adjusting command with right Xcode RC location on my machine. After inspecting Xcode package, found there is no "Profiles/Runtimes/iOS.simruntime …" path within the package. I wonder it's also related to a verifying 'ios 17.0.simruntime" message that takes long time to dismiss when installing Xcode ios 17.0 platform (actually it happens for other platforms as well). My mac is an Intel one.

Simulators just don't seem to catch a break with the latest Xcode versions. You'd think they'd get better, but nope – they're still painfully slow in all versions. And to top it off, errors decide to pop up several minutes after you've clicked or tapped on something. It's got me wondering if there's some funky systemic issue with Apple's platforms and their asynchronous nature. Overall, I'm not sold on Apple's platforms being the go-to choice for smooth and stress-free software development.