@n8ryder,
Webkit allowed 448MB of canvas buffer memory earlier whereas they have dropped it to 224MB. Because of this, there was some memory issue with CanvasJS Charts in latest iOS. However we have optimized memory consumption in CanvasJS v2.3 – please checkout release blog for more info. Kindly download latest version of CanvasJS Charts from our download page and let us know your feedback.
If the issue still persists, kindly share sample project over Google-Drive or Onedrive, so that we can look into the issue and help you resolving it.
—
Vishwas R
Team CanvasJS