@droftarts, @oliof
Thanks for the info. I will ensure to close all browser windows before doing any more testing.
I am not sure it is related, but my network setup is 2x Asus rt-ax56U routers, one main, one a mesh access point connected on a wifi backbone with the duet via ethernet.
Oddly, the board no longer appears in the list of clients even though I can connect to DWC. It seems to be causing issues on my network. Unclear to me what is going in. I may redo my network and see if there is any improvement.