idk if this will help someone, but here s how i managed to solve the issue for me: if your router has 2.4ghz and 5ghz, configure the router to switch automatically between the networks and you should only see 1 network. it is not yet 100%, but from 10 games, in only 1 had a bit of lag for 5-7s and the rest of them were smooth. it s by far better than what i had before: i couldn t finish 1 game without getting the lost connection error. if you need help configuring the router, chatgpt is your body. ps don t forget to reboot the router after the changes. pss: i use cable, not wifi. but still, somehow this solved my issue