ElemeFE / ElemeFE/element

el-tree渲染大量数据的卡顿问题

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Description

现在el-tree一遇到大量数据的情况下,展开收缩就会很卡顿,通过performance分析主要耗时集中在创建元素上,渲染了全部的元素.我看之前有提过一条类似的issue,但是被关闭了说是在3.0会有安排. 请问什么时候可以完成.
目前的版本:"element-ui": "^2.12.0",

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