Recyclerview痛苦地缓慢加载毕加索的缓存图像

我已经实现了一个RecyclizerView，它主要包含通过毕加索加载的图像。我的问题是，一旦我向下滚动或向上滚动视图，占位符图像就会显示大约一秒钟，然后才会被实际图像替换。它滚动得非常流畅，但实际上无法使用。每次某些内容从屏幕上滚动时都会发生这种情况。

毕加索显然正在将图像缓存到磁盘，因为它们的加载速度比初始加载时间快，但它们肯定会立即从缓存中重新加载。我错误地实现了什么？

我的适配器代码：

public class ExploreAdapter extends RecyclerView.Adapter<ExploreAdapter.ExploreViewHolder> {

    private List<ExploreItem> exploreItemList;
    private Context mContext;
    private int deviceWidth = PrefUtils.getDeviceWidth();

    public ExploreAdapter(Context context, List<ExploreItem> exploreItemList){
        this.mContext = context;
        this.exploreItemList = exploreItemList;
    }

    @Override
    public int getItemCount(){
        return exploreItemList.size();
    }

    @Override
    public void onBindViewHolder(ExploreViewHolder exploreViewHolder, int i){
        ExploreItem item = exploreItemList.get(i);
        exploreViewHolder.getvTitle().setText(item.getTitle());
        exploreViewHolder.getvUsername().setText(item.getUsername());
        exploreViewHolder.getvNumLikes().setText(item.getNbOfLikes());

        Picasso.with(mContext).load(item.getMediaLocation().trim())
                .resize(deviceWidth, deviceWidth)
                .centerCrop()
                .placeholder(R.drawable.profile_background)
                .into(exploreViewHolder.getvImage());

        Picasso.with(mContext).load(item.getUserProfilePicUrl().trim())
                .placeholder(R.drawable.profile_picture)
                .into(exploreViewHolder.getvProfilePic());
    }

    @Override
    public ExploreViewHolder onCreateViewHolder(ViewGroup viewGroup, int i){
        View itemView = LayoutInflater.
                from(viewGroup.getContext()).
                inflate(R.layout.explore_item, viewGroup, false);

        return new ExploreViewHolder(itemView);
    }

    public static class ExploreViewHolder extends RecyclerView.ViewHolder{
        private TextView  vTitle,
                          vUsername,
                          vNumLikes;

        private SquareImage vImage;
        private ImageView vProfilePic;

        public ExploreViewHolder(View v){
            super(v);
            this.vTitle = (TextView) v.findViewById(R.id.explore_item_title);
            this.vUsername = (TextView) v.findViewById(R.id.explore_item_username);
            this.vNumLikes = (TextView) v.findViewById(R.id.explore_item_number_likes);
            this.vImage = (SquareImage) v.findViewById(R.id.explore_item_image);
            this.vProfilePic = (ImageView) v.findViewById(R.id.explore_item_profile_picture);
        }

        public TextView getvTitle() {
            return vTitle;
        }

        public TextView getvUsername() {
            return vUsername;
        }

        public ImageView getvProfilePic() {
            return vProfilePic;
        }

        public SquareImage getvImage() {
            return vImage;
        }

        public TextView getvNumLikes() {
            return vNumLikes;
        }

        public void setvImage(SquareImage vImage) {
            this.vImage = vImage;
        }

        public void setvNumLikes(TextView vNumLikes) {
            this.vNumLikes = vNumLikes;
        }

        public void setvProfilePic(ImageView vProfilePic) {
            this.vProfilePic = vProfilePic;
        }

        public void setvTitle(TextView vTitle) {
            this.vTitle = vTitle;
        }

        public void setvUsername(TextView vUsername) {
            this.vUsername = vUsername;
        }
    }
}

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