Xcode Simulator Run Slow. 1, OS X Yosemite). 3. 18 Everything worked perfect on Xcode 9.
1, OS X Yosemite). 3. 18 Everything worked perfect on Xcode 9. And if you’ve needed to use it for any period of time, you know: it’s a memory hog. Of course the project builds and runs just fine in simulator. 0: Fixing a Build and run on simulator is suddenly very slow since Xcode 16. 1, After building the project and when the simulator launches, it shows blank black screen. 4 , I noticed that the simulator is running very slowly. 5 minutes Jun 2, 2021 · Slow Testing With Xcode 12. 12. Super simple animation is working on 2 fps and whole Mac OS is super slow while animation on Simulator is working. I tried also reinstalling xcode, checking out the sources from git again. Mac HDD very slow running xcode and iOS Simulator Ask Question Asked 9 years, 2 months ago Modified 9 years, 2 months ago Sep 16, 2020 · For devices running iOS 14, select Xcode window tab, click Devices and Simulators, find your device, right-click to unpair the device After doing the work, re-run your app, everything should be ok. 1 GM (11A1027) the problem is still the same. swift file that defines a As Xcode 14. EDIT: After updating to 11. I scripted it to be a static dictionary in a struct, but XCode choked on it. Xcode 14. This is a known problem with Xcode 13, there is a bug that is causing spotlight to use 100% CPU. Jan 14, 2026 · Learn how to install the Flutter SDK. I have checked the Xcode project and don't seem to find anything that suggest that I have enabled any profiling or coverage collection. It's extremely slow and unresponsive. 0. What's a good way to just get my definitions in memory? Would using an array instead of a dict make a difference? Can I tell XCode to stop scanning the file for code completion (or whatever it's doing)? It appears that XCode doesn't recognize that the . Then to deploy app to device or simulator, on Xcode it takes about 2. Tried deleting and reinstalling and still no fix. Before I upgraded to Xcode 10 I was running the same project on Xcode 9 and High The Xcode 9 simulators were already really slow (running at about 10 fps on this iMac), but now with Xcode 10 they have become even slower. It was slow ass fuck on my 2017 MBP, but I spend 40% of the time troubleshooting the fucking previews. Since this is my main development machine, I think I could have some settings related to openssl, brew, some packages I installed that is conflicting with lldb. I had this issue with Xcode on my Intel Mac and also on my 14" too. What's a good way to just get my definitions in memory? Would using an array instead of a dict make a difference? Can I tell XCode to stop scanning the file for code completion (or whatever it's doing)? Sep 20, 2023 · Cordova CLI build takes 5+ minutes to complete on iMac and takes about 10 seconds to complete on my Windows computer. A 1 second animation will take 10 seconds with Slow Animations enabled. My old 2015 MBP is a bit quicker to build the same project. Jan 1, 2026 · For iOS developers, Xcode’s Simulator is an indispensable tool for testing apps without physical devices. But if I choose it to run under iOS 7 it ran norm I'm trying to run an iOS simulator (Xcode 7. 5 and Big Sur OlKir1143: When running app in iOS 14. So for instance if you try to make a variable of type Landmark, and then right-click and "Jump to Definition" XCode just flashes a question mark. it can take more than 5 seconds to execute a single command. Hello team, On Xcode 14. After doing some research, I noticed that launching any application causes the simulator to flood the system with logs. I've had this problem once already and I had to reset my whole mac to fix it. Aug 8, 2021 · Hey Has anyone encoutered this kind of problem? Im trying to test my game on Xcode simulator, but the game runs with like 5fps and CPU is at maximum. Also, more "power user" informations would be greatly appreciated too such as the estimation of the package's full size to come with each option ticked, overseeing of every single packet and their relative failures to go up, etc. I started a virtual iPhone 13, and even the menus aren't very smooth like under 30 fps. 3 Xcode 12. 2. Try a newer Mac (2017 or later, but ideally an M1) as they have more RAM and are faster. I am running Xcode 8 on macOS Sierra 10. , iOS 13) to test your apps on older iOS versions, the "Download More Simulators" list in Xcode Preferences appears empty. But after updating to Xcode 10, Simulator started to get huge lags. This issue can grind development to a halt, especially if your app needs to support legacy iOS versions. I have been working on an app in iphone simulator for a number of weeks and it has been running well up until now, but all of a sudden has begun running very slow both when loading content and anim It appears that XCode doesn't recognize that the . 0, Slow Animations increases animation duration by a factor of 10. I was expected the iOS Simulator to be very fast since they now run on the same architecture, but I was very disappointed.