I have an Arris cable modem through Spectrum. I've never had any issues playing online games via Xbox/PS4/PC or streaming movies, etc. My Quest will connect via wifi, I can download and play some online games, like Rec Room. But two games I've purchased recently (Racket NX and Drop Dead Dual Strike) just will not connect to multiplayer. Racket NX always forces me to play offline from the title screen. Drop Dead I can never connect to a quick match or private match. I can invite my friends to my hosted room, then they accept invite, but then they never appear in my room. And vice versa.
Something is definitely wrong with my wifi router. I've updated it and etc, but I don't know what else to do. I've tried connecting to 2.4G and 5G, but both have the same issue.