I found an error. If you record both midi and audio tracks at the same time, you cannot transfer HD files from the Performer page. This error only occurs when you make an ADR recording in Nuendo. There is no such problem during normal recording. ADR only works well for audio recording. (Without Midi).
The other flaw is that replacing the three monitors doesn’t always work well. The position of the monitors on the Performer page does not change. (Nuendo 10.3 - VST Connect Pro/Performer 5.5)