Hint for QNAP Container Station user update your docker command!!!
I investigated due to the new docker run command with UDP packets the QNAPs run into issues if the nodes are running wiht the old run command without
-p 28967:28967/udp \
I do not why. However on my QNAP a buffer runs full and my QNAP lost more and more Internetconnection and performance. Due to that my Online Score go down of my nodes,