The weather is depressing, but at least I identified, I really hope this time for sure, that macOS Sonoma and accessing the Synology NAS causes the Retransmission, Duplication errors I see in Wireshark and experience with regards decreasing network performance.

It’s annoying and I hope I’ll find solutions for the problem, because some important tools I use are becoming useless if I can’t fix this, if it won’t get fixed by Apple/Synology.