SOLVED! The Giga (4000) modem solved the problems. Now, with the new laptop wifi 802.11 setted to "ax" on the 6Gb/s, it achieves great up/download. Before, "ac" and "n" were causing the modem to reset. On the a/b/c, the modem was holding, but the spe...
I live the exact same situation. Bought an Asus Vivobook 15 from Costco... at first I didn't accept the idea the new laptop could bring th modem HH300 to reset (with tv and phone). That's the 3th HH3000 doing the same. They're supposed to send me a G...