Multiple count down timers in RecyclerView flickering when scrolled

Question

I have implemented count down timer for each item of RecyclerView which is in a fragment activity. The count down timer shows the time remaining for expiry. The count down timer is working fine but when scrolled up it starts flickering. Searched a lot but did not got the good reference. Can any one help me?

This is my RecyclerView adapter

public class MyOfferAdapter extends RecyclerView.Adapter<MyOfferAdapter.FeedViewHolder>{
private final Context mContext;
private final LayoutInflater mLayoutInflater;
private ArrayList<Transactions> mItems = new ArrayList<>();
private ImageLoader mImageLoader;
private String imageURL;
private View mView;
private String mUserEmail;

public MyOfferAdapter(Context context) {
    mContext = context;
    mLayoutInflater = LayoutInflater.from(context);
    VolleySingleton mVolley = VolleySingleton.getInstance(mContext);
    mImageLoader = mVolley.getImageLoader();
}


public void addItems(ArrayList<Transactions> items,String userEmail) {
    int count = mItems.size();
    mItems.addAll(items);
    mUserEmail = userEmail;
    notifyItemRangeChanged(count, items.size());
}


@Override
public FeedViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    mView = mLayoutInflater.inflate(R.layout.my_feed_item_layout, parent, false);
    return new FeedViewHolder(mView);
}

@Override
public void onBindViewHolder(final FeedViewHolder holder, final int position) {
    holder.desc.setText(mItems.get(position).getDescription());//replace by title
    holder.scratchDes.setText(mItems.get(position).getScratchDescription());

    long timer = mItems.get(position).getTimerExpiryTimeStamp();
    Date today = new Date();
    final long currentTime = today.getTime();
    long expiryTime = timer - currentTime;


    new CountDownTimer(expiryTime, 500) {
        public void onTick(long millisUntilFinished) {
            long seconds = millisUntilFinished / 1000;
            long minutes = seconds / 60;
            long hours = minutes / 60;
            long days = hours / 24;
            String time = days+" "+"days" +" :" +hours % 24 + ":" + minutes % 60 + ":" + seconds % 60;
            holder.timerValueTimeStamp.setText(time);
        }

        public void onFinish() {
            holder.timerValueTimeStamp.setText("Time up!");
        }
    }.start();

}

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

public static class FeedViewHolder extends RecyclerView.ViewHolder {
    TextView desc;
    TextView scratchDes;
    TextView timerValueTimeStamp;
    ImageView feedImage;
    CardView mCv;

    public FeedViewHolder(View itemView) {
        super(itemView);
        mCv = (CardView) itemView.findViewById(R.id.cv_fil);
        desc = (TextView) itemView.findViewById(R.id.desc_tv_fil);
        feedImage = (ImageView) itemView.findViewById(R.id.feed_iv_fil);
        scratchDes = (TextView) itemView.findViewById(R.id.tv_scratch_description);
        timerValueTimeStamp = (TextView) itemView.findViewById(R.id.tv_timer_value_time_stamp);

    }

}

And this is my xml file used in adapter

<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<android.support.v7.widget.CardView     xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/cv_fil"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="@dimen/card_margin"
    android:layout_gravity="center"
    app:cardUseCompatPadding="true"
    app:cardElevation="4dp"
    android:elevation="6dp">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/feed_iv_fil"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:layout_alignParentTop="true"
            android:scaleType="fitXY"
            android:tint="@color/grey_tint_color" />

        <TextView
            android:id="@+id/tv_scratch_description"
            style="@style/ListItemText"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="casul shoes"
            android:fontFamily="sans-serif-light"
            android:padding="10dp" />


        <TextView
            android:id="@+id/tv_timer_value_time_stamp"
            style="@style/CardTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            />

        <TextView
            android:id="@+id/desc_tv_fil"
            style="@style/VendorNameText"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/feed_iv_fil"
            android:textColor="#3f3e3f"
            android:padding="10dp"
            />

    </RelativeLayout>


</android.support.v7.widget.CardView>

And this is screen shot of my RecyclerView