C# Dynamic and Error : Dynamic Operations Can Only Be Performed In Homogenous AppDomain.

I have been using dynamic since its introduction in .net framwork 4.0. I do something like using a c# sortedlist with id and object, or other usages as assigning a complete object to a dynamic variable.

In ASP.Net MVC I never had problems assigning dynamic variables, instead of var’s but when I use it with SharePoint, it causes me this specific problem : Dynamic Operations Can Only Be Performed In Homogenous AppDomain

Let me give you an elementary background to what I would like to achieve :

Using SharePoint lists with ~30 columns each having different datatypes, its only convenient to use SortedLists where its additionally sophisticated to Search specific item/ iterate it multiple times.

Its worth pointing out, according to this blog http://cc.davelozinski.com/c-sharp/fastest-collection-for-string-lookups its charmingly clear that SortedLists on single threaded search performs well for string lengths between 12-128 chars, especially using it with SharePoint 2013 its probably very much essential.

And the developer usage was implemented as below :

In the complex world of SharePoint the OwsTimer service especially when your writing SPTimerJob based applications on SP2013, using dynamic are avoided due to LegacySecurityPolicy on runtime. C# Dynamic datatypes withdraws type checking at compilation time; instead, it resolves its type during run time.

This behaviour directly conflicts SharePoint OwsTimer jobs config file.