CollectionView Blocks UI

[Petrarca181]

Hello this is mine CollectionViev,

XAML

    <CollectionView
                  x:Name="MainView"
                  ItemsSource="{x:Bind ViewModel.ItemsList, IsItemsSource=True}"
                  MaximumHeightRequest="{x:Bind ViewModel.GetMaxHeight()}">
                  <CollectionView.ItemTemplate>
                      <DataTemplate x:DataType="models:UsciteModel">
                          <SwipeView>
                              <SwipeView.RightItems>
                                  <SwipeItems Mode="Execute">
                                      <SwipeItem Command="{x:Bind SwipeItemInvokedCommand, Mode=OneWay}" />
                                  </SwipeItems>
                              </SwipeView.RightItems>
                              <Grid Margin="5">
                                  <Grid.ColumnDefinitions>
                                      <ColumnDefinition Width="1.2*" />
                                      <ColumnDefinition Width="0.3*" />
                                      <ColumnDefinition Width="0.3*" />
                                      <ColumnDefinition Width="0.3*" />

                                  </Grid.ColumnDefinitions>

                                  <Entry
                                      Grid.Column="0"
                                      Margin="5"
                                      FontAttributes="Bold"
                                      FontSize="{maui:OnScreenSize Medium='6',
                                                                   Large='11',
                                                                   ExtraLarge='21'}"
                                      IsReadOnly="True"
                                      Placeholder="USCITA"
                                      Text="{x:Bind Path=Uscita.Descrizione ?? '', Mode=OneWay}">

                                      <Entry.GestureRecognizers>
                                          <TapGestureRecognizer Command="{x:Bind UscitaEntryTappedCommand}" />
                                      </Entry.GestureRecognizers>

                                  </Entry>




                                  <Entry
                                      Grid.Column="1"
                                      Margin="5"
                                      FontAttributes="Bold"
                                      FontSize="{maui:OnScreenSize Medium='6',
                                                                   Large='11',
                                                                   ExtraLarge='21'}"
                                      Keyboard="Numeric"
                                      Placeholder="VALORE"
                                      Text="{x:Bind Path=Valore, Mode=TwoWay}" />



                                  <Entry
                                      Grid.Column="2"
                                      Margin="5"
                                      FontAttributes="Bold"
                                      FontSize="{maui:OnScreenSize Medium='6',
                                                                   Large='11',
                                                                   ExtraLarge='21'}"
                                      IsReadOnly="True"
                                      Placeholder="TIPO"
                                      Text="{x:Bind Path=TipoUscita, Mode=OneWay}">

                                      <Entry.GestureRecognizers>
                                          <TapGestureRecognizer Command="{x:Bind TipoUscitaEntryTappedCommand}" />
                                      </Entry.GestureRecognizers>

                                  </Entry>


                                  <Entry
                                      Grid.Column="3"
                                      Margin="5"
                                      FontAttributes="Bold"
                                      FontSize="{maui:OnScreenSize Medium='6',
                                                                   Large='11',
                                                                   ExtraLarge='21'}"
                                      IsReadOnly="True"
                                      Placeholder="NOTE"
                                      Text="{x:Bind Path=Note, Mode=OneWay}">

                                      <Entry.GestureRecognizers>
                                          <TapGestureRecognizer Command="{x:Bind NoteEntryTappedCommand}" />
                                      </Entry.GestureRecognizers>

                                  </Entry>

                              </Grid>
                          </SwipeView>
                      </DataTemplate>
                  </CollectionView.ItemTemplate>
              </CollectionView>

Item source is Observable collection inside ViewModel. The data is ready to use in another static class. I attach it like this ItemsList = MyStaticClass.ReadyToUseList;

If I do this inside constructor, when I try to navigate to the page this block the ui and navigates after 2-3 second without animation. It's enough to have 6-7 items to reduce performance so much.

Also if I remove any item from the collection ItemsList.Remove(item);, this will also block ui for 1-2 sec first time, afer removing items is much smoohter.

Am I doing somtehing wrong?