xbox game pass app too laggy and pixelated to play on insanely fast internet

i have the xbox game pass cloud streaming app on my samsung note 10 connected to a 5ghz 300mbs up/down fibre optic network, speedtests are showing my connection is stable and reaching those speeds, every time i try to stream a game through the cloud however
I get the notification that "your network may be experiencing some problems' and the game is incredibly laggy and low resolution to the point of being unplayable. does anyone have a fix for this? it couldn't possibly be that my connection or phone are too
slow.

:)