Documentation
Architecture
FastWPF relies on a multi-process architecture. This means that Visual Studio is not slowed down and the computer and memory can be fully used. A separate background process is started for each preview, which communicates with Visual Studio.
If you deactivate the Designer, all background processes are terminated and restarted when reactivated.
After each build process, all processes are reinitialized and the data from the last build process is used.