Visual Studio hangs after changes in a XAML file

Vote here :https://visualstudio.uservoice.com/forums/121579-visual-studio-2015/suggestions/2204137-improve-the-xaml-designer-performance

A tip from that page that helped in my case ...

Disabling effects rendering (the fx button at the bottom left of the xaml editor) caused a significant performance boost.

Also, deleting the .suo file can sometimes fix a lot of Visual Studio problems. In VS2015 just delete the .vs folder at the root of the solution, that's where the .suo file lives.

I've had the same problem and for me it was Resharper causing it. Try to suspend Resharper and uninstall all third-party add-ins if it doesn't help (resharper, ghostdoc etc.)

Also try to run VS with /SafeMode flag and see if it works properly.

I posted a thread about this on MSDN's forum too, and I got an answer which did the trick:

Apparently I had to delete the Project Solution file and then run the .csproj file.

Don't really know why but this made it work again! So if anyone has been experiencing this problem, try the solution above.

EDIT:

Link to the answer on MSDN