I am unsure if it will work since when I play games and select the option to check my connection it says "4K Resolution Unsuported By Device".
Is it because my device can't handle it or because I don't own a Stadia Pro subscription yet?
Hello @Rafaelpine
Take a look at the hardware requirements for playing Stadia in 4K on this page: https://support.google.com/stadia/answer/9607891?hl=en
If you are sure your system meets these requirements, then you'd also need to be a Stadia Pro subscriber (or still in the free one month period after signing up).