When I run visual studio 2010's performance wizard for CPU utilization of my site it shows me 51 degrees related call tree as a hot path.
My application is MVC3 Razor. Please let me know are there any known performance issues of 51degrees Mobi Foundation 1.2.0.5 library.
Could you try version 2.0 and advise if this is still a concern. We've changed the code to improve performance.