vue渲染大量数据时卡顿卡死解决方法

//查询
    handleSearch() {
      //this.isShow = false;
      if (this.isSearching) {
        // 提示用户是否停止查询?
        this.$confirm("确认停止查询?", "提示", {
          type: "warning",
        }).then(() => {
          this.listLoading = false;
          this.searchingTaskTag = "";
          this.isSearching = false;
          this.hardReset = false;
          this.$nextTick(() => {
            this.hardReset = true;
          });
        });
      } else {
        this.isSearching = true;
        this.searchingTaskTag = genUuid();
        this.tableData = [];
        this.startId = 0;
        this.fn1();
      }
    },

    async fn1() {
      let startId = this.startId;
      let endId = this.startId + this.step;
      let param = {
        pageNo: this.page,
        pageSize: this.pageSize,
        startId: startId,
        endId: endId,
        searchingTaskTag: this.searchingTaskTag,
      };
      try {
        if (this.maxId <= 0) {
          let response = await getMaxId();
          this.maxId = response.body;
        }
        if (startId <= this.maxId) {
          this.fn2(param);
        } else {
          this.$message.success("查询结束！");
          this.isSearching = false;
        }
      } catch (e) {}
    },
getMaxId() {
      getMaxId()
        .then((resp) => {
          this.maxId = resp.body;
        })
        .catch((error) => {
          this.$message.error(error.body);
        });
    },

   //获取数据列表
 fn2(param) {
      fn2(param).then(
      (resp) => {
          let tempList = resp.body.content;
          let echoSearchingTaskTag = resp.body.searchingTaskTag;
          if (
            tempList.length > 0 &&
            this.searchingTaskTag == echoSearchingTaskTag
          ) {
            this.tableData.push(...tempList);
           }
          if (this.searchingTaskTag == echoSearchingTaskTag) {
            this.listLoading = false;
            this.startId += this.step;
            this.fn1();
          }
        })
        .catch((error) => {
          this.listLoading = false;
          this.$message.error("获取失败！");
          this.isSearching = false;
          this.flag = false;
        });
      this.listLoading = false;
    },