Just a small reminder, since this might not be the first place you look when VS is very slow at building your solution.
If you have a large amounts of XSD-schemas in your solution, Visual Studio will process these after building, whether it went successful or not. And this will be done even if you did not build the actual schemas-project as long as it is part of the solution.
In a current project, we have 840 schemas with a lot of internal imports and this delayed the entire process for several minutes.
Build the schemas-project once, reference the DLL and your pain is gone.
Christian Staerk
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