el-table渲染慢卡顿问题最优解决方案

#eagleMapContainer{
   overflow-y: auto;
   margin-top: 10px;
   min-height: 150px;
   max-height: 600px;
 }
 #eagleMapContainer::-webkit-scrollbar {
    width: 6px; /*对垂直流动条有效*/
    height: 6px;
  }
  #eagleMapContainer::-webkit-scrollbar-track{
    background-color:rgba(0,0,0,0.1);
  }
  #eagleMapContainer::-webkit-scrollbar-thumb{
    border-radius: 6px;
    background-color: rgba(0,0,0,0.2);
  }
  /*定义右下角汇合处的样式*/
  #eagleMapContainer::-webkit-scrollbar-corner {
    background:rgba(0,0,0,0.2);
  }

  hanldeScroll(e) {
      // 获取eagleMapContainer的真实高度
      const boxHeight = document.getElementById('eagleMapContainer').offsetHeight
      // 获取table_list的真实高度（浮动内容的真实高度）
      const tableHeight = document.getElementById('table_list').offsetHeight
      // boxHeight和滑块浮动的高度相差小于50 && 不在加载中 && 不是最后一页 
      if (tableHeight - (e.target.scrollTop   boxHeight) < 50 && !this.loading && this.listPage < (this.tableList.length / 300)) {
        // 第一次触发时，记录滑块高度
        // data里scrollTop，listPage默认为0
        if (!this.scrollTop) {
          this.scrollTop = e.target.scrollTop
        }
        // 触发下拉加载更多
        this.queryMoreStat(true, tableHeight, boxHeight)
      } else if (e.target.scrollTop === 0 && !this.loading) {
        // 如果滑块上拉到顶部，则向上加载300条
        this.queryMoreStat(false, tableHeight, boxHeight)
      }
    }

    queryMoreStat(type, tableHeight, boxHeight) {
      this.loading = true
      // 触底加载
      if (type) {
        this.listPage = this.listPage   1
        const centerPage = this.listPage * 300
        const startPage = centerPage >= 300 ? centerPage - 300 : centerPage
        const endPage = centerPage   600
        const newList = this.tableList.slice(startPage, endPage)
        if (this.listPage > 0) {
          const box = document.getElementById('eagleMapContainer')
          // 视图跳到触发的数据，补回50的高度差值
          box.scrollTop = this.scrollTop   50
        }
        this.list = newList
      } else {
        // 置顶加载
        if (this.listPage > 0) {
          this.listPage = this.listPage - 1
          const centerPage = this.listPage * 300
          const startPage = centerPage >= 300 ? centerPage - 300 : centerPage
          const endPage = centerPage   600
          const newList = this.tableList.slice(startPage, endPage)
          if (this.listPage > 0) {
            const box = document.getElementById('eagleMapContainer')
            box.scrollTop = tableHeight - this.scrollTop - boxHeight
          }
          this.list = newList
        } else {
          this.list = this.tableList.slice(0, 300)
        }
      }
      this.$nextTick(() => {
        this.loading = false
      })
    }