Thank you, @Joseph-TP

Dear @Joseph-TP First off, thank you for the detailed and professional answer. I am sorry if my initial frustration led to a somewhat emotional post :) Once again, detailed description of case....

Recently purchased a brand new set of PA7017. Substituted a perfectly working set of PA4020P's. Connection now is really bad, slow, terminating every half and hour. The trace lenght is about 40...