问题
I recently made a game using sprite kit xcode 10.2 which was working fine unless ios 13 update, I tested the game in xcode 11 simulators with ios 13 the fps of the game starts to get reduce to 30-35fps. Also sometimes physics body on sprite nodes is not working properly. sometimes collision is detected on sprite nodes and sometimes it is being detected in middle of the sprite node which was not the case in ios 12 everything was working fine until ios 13 update.
来源：https://stackoverflow.com/questions/58062098/ios-13-sprite-kit-issues