Mahapps slows down WPF application

Question

Since I added Mahapps to my WPF application it slowed down dramatically: it takes 5 times longer than before to start up and while editing the XAML code, Visual Studio often waits for 10 seconds or more while I'm typing. Is this normal or are there tweaks to speed it up?

I'm using C# 4.0 on Win7 64bit.

Answer 1

Have same issue when I included the Icons.xaml file. But I deleted all content from that file and just put only those Icons/content which I required/needed for the project. For now its working fine..