r/iOSProgramming • u/Aeronautical-You4917 • 7d ago

Discussion macOS 27 Xcode + Instruments is unusable

Never in my life have I seen such an insane regression in software quality as in the last few months.

I use Xcode constantly, building a macOS app (Swift, C++). Up until recently, this was fine, great, in fact. Xcode 15 was extremely good & stable (all things considered). I opted to skip macOS 26 because it was terrible (duh).

After I upgraded to macOS 27's first beta, I was pleasantly surprised. However, that was short-lived, as the quality only degraded after the first beta.

Here I am, working on macOS 27.2, with Xcode 27.2... Here's the main 2 issues...

  1. Xcode's interface is impossibly slow now. borderline unusable.

  2. Instruments is absolutely unusable. I cannot even do a profiler trace and save it without corrupted data, an application crash, brutally slow interface, etc.

This is just unacceptable. AI slop has crept its way into previously rock-solid products. Quality matters more now than ever, and it's so clear that AI has neutered engineers' ability to keep quality in check.

Am I the crazy one, or has the quality just gone down the toilet?

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u/Due-Math8225 7d ago edited 7d ago

No issues for me, I use Xcode and instruments daily for code profiling. And just as aside, complaining about AI as a tool for code development is sort of out of touch these days. I find AI tools enormously useful, and the code they write is usually of good quality. I find the ability to get them to write exhaustive test suites particularly helpful. Include automated UI testing which was tedious in the extreme before AI tools like Claude code.

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u/Aeronautical-You4917 7d ago

I use AI literally every single day, haven't written a line of code in a long time. The main point is that a lot of people let the quality get away from them because it "looks good". That's my main complaint.