Tried running ArcGIS Runtime SDK for iOS samples from the GitHub with XCode 9 GM Seed and iOS 11, the map rendering performance is really slow. If I try to zoom in/out or browse around my location the rendering animation is killing UX.
Unfortunately we've been experiencing the same thing. It's a bug that apple is aware of and seemingly getting a lot of people wanting it fixed: iOS 11 Simulator unusable slow | Apple Developer Forums
Thank you for pointing the root cause. At least it should work on the real device then, which is main priority.
Turns out this is due to a bad Open GL ES library.
Temporary fix is to pull those libraries from an older beta of XCode and drop them into your current XCode bundle... sounds scary but it isn't. Links to those files as well as instructions have been posted to Redit here:
This fixed it on my MBP running High Sierra and XCode 9
FYI - this issue is not fixed as of the last XCode update
Michael, can you please retry and verify you are using Xcode 9.1.
It was part of the Xcode 9.1 release notes and we are seeing this resolved for us.
Sorry - that should have read is fixed as of the latest update... thank gawd.
Now if they can only get code folding back in Xcode...
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