For game streaming itself, there's always going to be the latency issue that will keep a bunch of gamers away from ever using it. I never bothered even looking at the streaming options when I had game pass because of that.

GPU drivers have low latency modes for when the timing of a frame update means your current input will come a frame or two later, and a difference of 10ms in frame delivery time can be enough to call something a stuttery mess.

Now add network latency that is an order of magnitude higher. Streaming video and/or audio is fine because it can buffer enough to absorb typical latency jumps, but games can't buffer more than the upper bound of input latency, so that brief 1 second network hiccup is a horrible stutter where you can't even move.

Though at least game pass works more like Netflix in that you can just pick a game available and try it out if you have a sub. I don't get the appeal of the ones where you not only subscribe to the service but also need to buy the games you play at full price.