After I updated ArcGIS Runtime SDK for Android 10.2.8-1. I found some problem when I added many PictureMarkerSymbol to mapview. I attach image to explains about problem. The left image (lava) is a device that processes with MediaTek processor (MT6735T). It spend too much time to process PictureMarkerSymbol and my application always crash. The right image (moto) is a device that processes with Snapdragon processor (Snapdragon 801). It's able to run normally. I try to test by using many device that process with MediaTek processor as possible as I can. I found the same problem as it but I don't found this problem in the other processor (such as Snapdragon, Exynos that's provided by Samsung). I only found this problem in MediaTek processor after I updated ArcGIS Runtime SDK for Android 10.2.8-1. This process always run on ui thread although I define the process of drawing graphic on background thread.