Delphi android optimize image upload

I have a question regarding loading images in Delphi. My average image is 47kb, when I show it on ListView the application almost comes to lock for the time of the answer.

Images are stored directly in the database with the type pre-defined blob.

My question is this, the loading delay is related with the way I'm bringing the data or is it a ListView problem?

What is the best way to do this loading? If I store the images in a folder on the server and display them through the URL will I have a better performance?

Here is the snippet of code I read and I wrap it to the ListView:

{$REGION 'Lista Produto'}
      TThread.CreateAnonymousThread(
      procedure()
      begin
        TThread.Synchronize(TThread.CurrentThread,
        procedure()
        begin
          dm.UniQuery1.sql.text := 'SELECT pro_id, pro_ds, pro_img, pro_preco '+
          'FROM produto WHERE '+
          ' pro_ds like '+q('%'+edDescricao.Text+'%')+
          ' AND pro_fabricante_id  like '+q(IfThen((edFabricante.Text<>''),auxFabricante,'%'))+
          ' AND pro_secao  like '+q(IfThen((edSecao.Text<>''),auxSecao,'%'))+
          ' AND pro_merc_id  like '+q(IfThen((edMercado.Text<>''),auxMercado,'%'))+
          ' ORDER BY pro_id DESC';
          dm.UniQuery1.Open;

          try
            ListView1.BeginUpdate;
            ListView1.Items.Clear;

            S := TMemoryStream.Create();

            while not dm.UniQuery1.Eof do
            begin
              LItem := ListView1.Items.add;
              LItem.Text :=  dm.UniQuery1.FieldByName('pro_ds').AsString;
              LItem.Data[TMultiDetailAppearanceNames.Detail1]  :=   dm.UniQuery1.FieldByName('pro_ds').AsString;

              LItem.Data[TMultiDetailAppearanceNames.Detail2]  :=   'R$ '+
                   FormatFloat('###,###0.00', dm.UniQuery1.FieldByName('pro_preco').AsCurrency);

              TblobField(dm.UniQuery1.FieldByName('pro_img')).SaveToStream(S);
              s.Position := 0;
              imgAux.Bitmap.LoadFromStream(S);
              LItem.Bitmap := imgAux.Bitmap;



              dm.UniQuery1.Next;
            end;

            Application.ProcessMessages;
            ListView1.EndUpdate;
          except
            on E: Exception do
              ShowMessage('Erro: ' + E.Message);
          end;

          Application.ProcessMessages;

        end);


        TThread.Synchronize(TThread.CurrentThread,
        procedure()
        begin

        end);
      end).Start;
      {$ENDREGION}