I've done tests, everything checks out. Im Im gett around 500mbps speed. And ping is around 50. Im not sure what the issue is. Im thinking it may be related to my asus 68u router? Idk, I'm pretty novice with modems and routers.
Hello how ar you connect whit the router/ cable or wifi, and what ar the data settings in the stadia mobile app in the option menu settings> data use and presentation lower the setting and see if that helps.