QMUIImagePreviewView 如何设置图片和视频混合轮播查看，我的部分代码设置如下，滑动时出现卡顿。

`- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView renderZoomImageView:(QMUIZoomImageView *)zoomImageView atIndex:(NSUInteger)index { zoomImageView.reusedIdentifier = @(index);

if (index == 1) {
    dispatch_async(dispatch_get_main_queue(), ^{
        AVPlayerItem *item = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:@"https://ddg-mall-test.obs.cn-north-4.myhuaweicloud.com/dr-test%2Fbusiness%2Ffile%2Fbb0cc146-847d-424a-a9f9-4a5f8576c4d9.mp4"]];
        zoomImageView.videoPlayerItem = item;
    });
} else {
    zoomImageView.image = [UIImage imageNamed:@"image0"];
}

}

• (QMUIImagePreviewMediaType)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView assetTypeAtIndex:(NSUInteger)index { if (index == 1) { return QMUIImagePreviewMediaTypeVideo; } return QMUIImagePreviewMediaTypeImage; }`