WPF: windowsformshost with webbrowser is very slow

I need to suppress script errors, context menu and shortcuts in WebBrowser control in my application. But WPF WebBrower doesn't suppo开发者_StackOverflowrt this actions. So, I use WinForms WebBrowser. But WinForms WebBrowser is very slow during resizing of WindowsFormsHost control.

What do you recommend me?

P.S. I use .Net framework 3.5

Temporary solution: make resizing without animation. Forexample:

<GridSplitter ShowsPreview="true" ... />