Awful Performance on iOS Simulator (Xcode 9)

[jadar]

Platform: iOS / Xcode 9
Mapbox SDK version: 3.6

Steps to trigger behavior

1. Install Mapbox in an new app/project.
2. Launch on any iOS Simulator. (I used iPhone X.)
3. Observe impossibly slow scrolling, 100% CPU usage, and a laptop that sounds like a fighter jet.

Expected behavior

Smooth map scrolling, zooming, interaction, etc.

Actual behavior

Very slow map interaction.

[jfirebaugh]

Duplicate of #9959.