Hey, Bustacap!
Based on your internet connection, I would assume this is related to the recent DHCP Lease Timer/Arris router issue.
Changing the DHCP Lease timer or factory resetting the router has been the only resolution.
If you would like to collect a WinMTR Test, we can verify if it is related. Make sure to run the WinMTR test for 5 to 10 minutes while experiencing the disconnections.