Optimize build performance for solution

Visual Studio 2017 15.8 or later include a menu item: Build > ASP.NET Compilation > Optimize Build Performance for Solution.

ASP.NET compiles its views at runtime, which means that an ASP.NET project carries with it a copy of the compiler. However on a developer machine when the copy of the compiler doesn’t match Visual Studio’s copy, build performance is impacted on the order of 1-3 seconds per incremental build. This feature updates your project’s copy of the compiler to match Visual Studio’s, which usually speeds up incremental builds.