Qt Creator is blocked while compiling and parsing C++ files (MSVC2019)

Every time I start compiling and the Creator starts to parse the C++ files at the same time, the Qt Creator hangs and is blocked until the compiler has finished.

Most of the time this happens when the compilation process starts and I open a new source file or start typing something into an already opened file. When the C++ parser starts parsing the files, the Qt Creator is not responding.

When I kill the Qt Creator process I get a message when restarting that the CppTools does not worked properly.

Qt Forum:
https://forum.qt.io/topic/125233/qt-creator-is-blocked-while-compiling-and-parsing-c-files-at-the-same-time/2