Hello Umbraco Community

I have a problem with looping trough about 1400 nodes. Its very slow and my page has long loading-times.

The thing is that i only need the nodes where at the "Multinode Treepicker" is picked the current page. which is this Statement at the moment:

if (komponist.Name == Model.Content.Name)
                                                {
                                                    isKomponist = true;
                                                }

Here is the full code:

@foreach (var eachKomposition in Umbraco.Content(1075).Children().Where("Visible"))
                                    {
                                        IPublishedContent kompositionModel = (IPublishedContent)eachKomposition;
                                        bool isKomponist = false;
                                        if (kompositionModel.HasValue("komponist"))
                                        {
                                            var komponistenTreePicker = kompositionModel.GetPropertyValue<IEnumerable<IPublishedContent>>("komponist");
                                            foreach (var komponist in komponistenTreePicker)
                                            {
                                                if (komponist.Name == Model.Content.Name)
                                                {
                                                    isKomponist = true;
                                                }
                                            }
                                        }
                                        if (isKomponist)
                                        {

                                            <div class="filtertest" data-komponist="@kompositionModel.Name">
                                                <a href="@kompositionModel.Url">
                                                    <div class="kompRow centermobile">
                                                        <div class="row">
                                                            <div class="col-12 col-12">
                                                                @kompositionModel.Name
                                                            </div>
                                                            <div class="goto">
                                                                Ansehen &raquo;
                                                            </div>
                                                        </div>
                                                    </div>
                                                </a>
                                            </div>
                                        }
                                    }

Is there a way where i don't have to loop trough all nodes and then check for this selected item in the multinode tree picker, so that i only loop trought the nodes where this condition is true?

my idea would be something like (pseudocode):

@foreach (var eachKomposition in Umbraco.Content(1075).Children().Where(Value("komponist")[0].Id == Model.Content.Id)

is there a way to do this?

thanks in advance for helping

Kind regards Hubert