经过排查，发现导致卡顿是如下原因，cell一直做registerForPreviewingWithDelegate行为，导致滑动越来越卡

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"xxxx" forIndexPath:indexPath];
    
    if ([[WW3DTouchHelper sharedHelper] support3DTouchWithViewController:self]) {
        [self registerForPreviewingWithDelegate:self sourceView:cell];
        cell.isAllreadySetupPreviewingDelegate = YES;
    }
    
    return cell;
}

修改方式如下，防止cell多次注册

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"xxxx" forIndexPath:indexPath];
    
    if (!cell.isAllreadySetupPreviewingDelegate && [[WW3DTouchHelper sharedHelper] support3DTouchWithViewController:self]) {
        [self registerForPreviewingWithDelegate:self sourceView:cell];
        cell.isAllreadySetupPreviewingDelegate = YES;
    }
    
    return cell;
}