iOS中扩展native组件后非常卡顿

Question

我在iOS项目中注册一个较为复杂的组件，但是注册到weex中使用是非常卡顿，还一直提示以下错误，出现过超出栈的最大值的情况，然后换了一个标签名就OK了，只是打印的少了些，想知道这种卡顿该怎么优化

2017-03-15 11:52:53.254017 WeexDemo[1170:880893] [fg255,165,0; <Weex>[warn]WXUtility.m:360, Unknown fontFamily:'Open Sans', sans-serif [;
2017-03-15 11:52:53.255143 WeexDemo[1170:880893] [fg255,165,0; <Weex>[warn]WXUtility.m:360, Unknown fontFamily:'Open Sans', sans-serif [;
2017-03-15 11:52:53.256996 WeexDemo[1170:880893] [fg255,165,0; <Weex>[warn]WXUtility.m:360, Unknown fontFamily:'Open Sans', sans-serif [;