Stop in for a cup of coffee

I am not going to throw around any **** about the build quality. It may be the pan was not sealed correctly. Which is on me......BUT with the oil on the flex plate, doubtful. BUT possible still.............Does not leak till 5K RPM. Then it pours out....
I know you said you have a pcv. But I would start back there. High rpm leaks are generally caused by excessive pressure..