ModelBuilder low performance?

Question

Having this code in OnModelCreating event really slows down visual studio, once i remove it its super fast again. Can anyone confirm?

 

 Protected Overrides Sub OnModelCreating(ByVal ModelBuilder As System.Data.Entity.ModelConfiguration.ModelBuilder)

    Dim Decimals = {ModelBuilder.Entity(Of Material).Property(Function(Prop) Prop.Quantity),
             ModelBuilder.Entity(Of ProductPrice).Property(Function(Prop) Prop.Price),
             ModelBuilder.Entity(Of ProductQuantity).Property(Function(Prop) Prop.Quantity),
             ModelBuilder.Entity(Of Product).Property(Function(Prop) Prop.TaxRate),
             ModelBuilder.Entity(Of Product).Property(Function(Prop) Prop.PUomFrom),
             ModelBuilder.Entity(Of Product).Property(Function(Prop) Prop.PUomTo),
             ModelBuilder.Entity(Of Product).Property(Function(Prop) Prop.SUomFrom),
             ModelBuilder.Entity(Of Product).Property(Function(Prop) Prop.SUomTo),
             ModelBuilder.Entity(Of PurchaseOrderItem).Property(Function(Prop) Prop.Discount),
             ModelBuilder.Entity(Of PurchaseOrderItem).Property(Function(Prop) Prop.Price),
             ModelBuilder.Entity(Of PurchaseOrderItem).Property(Function(Prop) Prop.Quantity),
             ModelBuilder.Entity(Of PurchaseOrderItem).Property(Function(Prop) Prop.Subtotal),
             ModelBuilder.Entity(Of PurchaseOrderItem).Property(Function(Prop) Prop.TaxRate)}

    Decimals.ToList().ForEach(Sub(DecimalProp)
                   DecimalProp.Precision = 18
                   DecimalProp.Scale = 4
                 End Sub)
  End Sub

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VB.NET to C# http://www.developerfusion.com/tools/convert/vb-to-csharp/