react写的项目中, 一个页面几百张图片, 图片都已经完全加载出来了, 可是上下滑动很卡, 总是出现白屏, 这个该怎么处理呢?

Question

另外 图片懒加载的时候, 加载很慢, 每次只加载5到10张也很慢, 也很卡
`

    {allData.map((item, index) => {
      return (
        <div key={index} style={{ display: "flex", position: "relative" }}>
          <div
            style={{
              display: "inline-block",
              height: "100%",
              width: "11%",
              flex: 1,
              position: "absolute",
              left: 0,
              top: 0,
            }}
          >
            <div
              style={{
                position: "sticky",
                top: 0,
                bottom: 20,
              }}
            >
              <p style={{ fontSize: 25, textAlign: "center" }}>
                {item.title}
              </p>
            </div>
          </div>
          <div
            style={{
              display: "inline-block",
              width: "89%",
              position: "inherit",
              left: "11%",
            }}
          >
            <div
              style={{
                display: "grid",
                gridTemplateColumns: "1fr 1fr 1fr 1fr 1fr",
                columnGap: 10,
                rowGap: 20,
              }}
            >
              {item.list.map((zItem, zIndex) => {
                return (
                  <div id="ele" style={{ height: 350 }} key={zItem.id}>
                    <div
                      style={{
                        height: "80%",
                        position: "relative",
                        padding: 20,
                      }}
                    >
                      <img
                        id="pp"
                        style={{
                          width: "100%",
                          height: "100%",
                          objectFit: "cover",
                          borderRadius: 20,
                        }}
                        src=''
                        data-imgurl={zItem.picUrl}
                      />
                      <img
                        style={{
                          position: "absolute",
                          top: "50%",
                          left: "50%",
                          width: "80px",
                          height: "80px",
                          transform: "translate(-50%, -50%)",
                          borderRadius: 20,
                        }}
                        src={PlayHoverImg}
                      />
                    </div>
                    <div style={{ padding: "0 20px" }}>
                      <p style={{ fontSize: 20, marginBottom: 10 }}>
                        {zItem.name}
                      </p>
                      <p style={{ color: "gray", marginBottom: 10 }}>
                        {zItem.artist.name}
                      </p>
                    </div>
                  </div>
                );
              })}
            </div>
          </div>
        </div>
      );
    })}

`

链接：https://pan.baidu.com/s/1IL2E...
提取码：1111