Can you share some runnable code that demonstrates the memory leak? This way I can check it on my side and see what happens. Also, can you tell me what exactly you mean by decrease of performance? Is the application lags? Or it consumes a lot of memory? Or you mean anything else?
Telerik by Progress
Want to extend the target reach of your WPF applications, leveraging iOS, Android, and UWP? Try UI for Xamarin
, a suite of polished and feature-rich components for the Xamarin framework, which allow you to write beautiful native mobile apps using a single shared C# codebase.