Help with Xamarin.Forms Listview on iOS

Dear Forum Members,

I have a working app made with Xamarin.Forms, but unfortunately the performance of my listview is - on iOS - very slow. I tested with my iPhone 4 and the performance is not acceptable at all. On android the performance is great.

This is how it looks like and what I want:

Here is the code of the ViewCell I'm using. Do you see anything I could optimize for this or asked different - how can I achieve the desired listview layout so the performance is OK for iOS?

I hope someone can help me and best Regards
Sebastian

        public class CodeProfileCell : ViewCell
            {
                public CodeProfileCell()
                {
                    var image = new CircleImage(){
                        BorderColor = Color.White,
                        BorderThickness = 3,
                        HeightRequest = 55,
                        WidthRequest = 55,
                        Aspect = Aspect.AspectFill,
                        HorizontalOptions = LayoutOptions.EndAndExpand,
                        VerticalOptions = LayoutOptions.StartAndExpand
                    };
                    image.SetBinding (CircleImage.SourceProperty, "Img");

                    Label Line1Label = new Label(){FontFamily="Helevtiva-Oblique", FontSize=12 , TextColor = Color.White};
                    Line1Label.SetBinding(Label.TextProperty, "Line1");

                    Label Line2Label = new Label (){FontSize = 10};
                    Line2Label.SetBinding(Label.TextProperty, "Line2");

                    Label Line3Label = new Label (){FontSize = 10};
                    Line3Label.SetBinding(Label.TextProperty, "Line3");

                    StackLayout ProfileInformationStack = new StackLayout () {
                        Orientation = StackOrientation.Vertical,
                        Spacing = 3,
                        Children = {Line1Label, Line2Label, Line3Label}
                    };


                    var grid = new Grid
                    {
                        RowSpacing = 0,
                        ColumnSpacing = 0,
                        Padding = new Thickness(0),
                        VerticalOptions = LayoutOptions.EndAndExpand,

                        RowDefinitions = 
                        {
                            new RowDefinition {Height = GridLength.Auto},
                        },
                        ColumnDefinitions = 
                        {
                            new ColumnDefinition {Width = GridLength.Auto },
                            new ColumnDefinition {Width = 20 },
                            new ColumnDefinition {Width = GridLength.Auto}
                        }
                    };

                    grid.Children.Add(image, 0, 0);
                    grid.Children.Add(ProfileInformationStack, 2, 0);         


                    this.View = grid;
                }
            }