Good move. Sounds like its the broadband, not the Asus.
Pull up the log in page for the hub. But don't log in, just click on the link "Check router status" That'll bring up a window with five tabs. Open the Downstream tab. Select all the text (Ctrl-A if using a keyboard), copy it (Ctrl-C), then paste it (Ctrl-V) into a reply here as TEXT not screenshots. Post that, do the same for the Upstream and Network log. You'll get an error message when you post the Network log, just click on "post" a second time.
There's a few foibles - Hub 4 sometimes doesn't report error counts properly, and if it is to do so then ideally needs to have run for 12-24 hours since changing mode or restarting. But we could take a look now for obvious problems with power or noise levels.