I am experiencing the same issue.
After installing Xcode Beta 4 all my MapKit code is not usable in iOS simulator due to slow speed.
I have reverted to Beta 3 where it runs perfectly.
Hopefully this is solved in Beta 5.
Not solved in Beta 5...
I'm back to Beta 3
I tried Beta 5 with iOS 10.3.1 iPhone Simulator. It is usable but Xcode makes the CPU go crazy.
I am also back on Beta 3.
Has anybody reported this issue?
This happens to me also on a mapView. It works fine on a device but the simultor is worthless in this state. I have file a bug report.
We are aware of this issue.
You can try alternate rendering modes which should help but won't completely solve the problem:
defaults write com.apple.CoreSimulator.IndigoFramebufferServices FramebufferRendererHint X
Where X is:
0 = auto
1 = Metal
2 = OpenCL
3 = OpenGL
Tried the workarround in Beta 6. It did not help anything. It is still too slow to be usable. Especially when testing MKMapView.
It seems like Beta 6 does not stress the CPU as much as Beta 5 when running code in the simulator.
Beta 3 or hardware is still the way to go when testing.
Also experiencing really bad FPS in SceneKit (not just MapKit). Even running the default SceneKit project (with the plane spinning etc), the iOS 11 simulator runs <=3 FPS in SceneKit. Can't really understand if I am the only one having the problem. The MacBook Pro I run on is early 2015 version, but until XCode 9 I haven't had a problem at all.
Intel Core i5
Intel Iris Graphics 6100 1536 MB
250GB Flash Storage (Not full)
Anyone else having this problem with SceneKit (not just MapKit) as well?
Edit: Added hardware details
OK. Please file a bug report about this, even if it is a duplicate it will be very helpful. Attach the output of "xcrun simctl diagnose".
Please file a bug report about this, even if it is a duplicate it will be very helpful. Please attach the output of "xcrun simctl diagnose".
Yes, I've seen this since the first beta of XCode 9. It's OK with the simulator for iOS10.x and earlier, but the iOS11 simulator is unusably slow (like 30 seconds to zoom them Map in or out, even when there's no annotations). There doesn't appear to be any problem when debugging on a genuine iOS11 device, so it seems to be confined to the iOS11 simulator.
I've submitted a bug report with diagnostics per the Apple Tech request.
Hey Apple, please take this seriously. It is probably blocking the UI-thread with some kind of internal background operation, causing extremly long UI delays. Hopyfully this does not slip into the GM.
Unfortunately Xcode 9 GM still contains this bug!!
I am not able to test my MapKit App due to very slow performance.
This starts to get very annoying as I have to turn to beta 3 which was the last version with good simulator performance.
It's still the same in the GM
Sad to see that this problem still exists in the GM build