You using the WIFI?
I've never had success with that stuff being reliable at all.
I think I've read others report issues with WIFI 6, basically "interfering" with the local network causing a "black out". Check Reddit etc.
I always found WIFI to be dubious on the routers/modems, needing resets now and then because it "freezes". Wired always has worked.
Report and get a ticket and/or see if a new drivers arrive to fix it. I've barely used the WIFI on my board as I know the Modem is problematic at times with it on other devices.
WIFI 6 is new and probably need updates to fix issues unless it's a hardware fault your encountering.
Gigabyte X570 AORUS XTREME, Ryzen 7 3800X 4.45Ghz, 4266/1900 MEM/FCLK, 18.104.22.168.76.tRFC 650 1T 1.58V
4x8Gb Kingston HX434C19FB2K2/16 3466C19 1.2V (Micron E-die 16nm)
OLD: Biostar x470GT8 Ryzen 7 1700 @ ~4.0Ghz CPU, 3200Mhz RAM ...