I can't upload screenshots, it gives me an error. That's why I posted it on Dropbox TPLINK:...

Can I get some advice? Or should I take the router under warranty?

Now I've checked it again in Steam Link: I connected it via a TPLINK router - speed of 20 megabits. I switched to a Xiaomi router - speed of 100 megabits. For some reason, I can't attach screenshots...

@Joseph-TP And one more thing: I tried 3 other usb hubs before that, this is the fourth one. It's the same problem everywhere.

@Joseph-TP tablet lenovo xiaoxin pad 2024. I also checked on the poco m4 pro 5g phone, everything is the same there.

@Joseph-TP Yesterday I tried to flash the router to a previous firmware version, disable upnp, and disable everything in the ALG section. None of this helped.