On IOS default project has zero framerate

Hi, I have built default project with cocos2d-x v3.14.1 on IOS version - 10.3.1 and frame rate is zero, nothing happens. touch is logged, but screen is frozen. Music can play and it seems that actions happen, but screen is not updated. Same goes wtih cocos2d-x v3.15.1. Strange is that on IOS device version - 10.2 everything’s fine. So something has changed and with new IOS cocos2d-x doesn’t work. Please help.