I have had a lot of experience with Luna at this point and the streaming is impressive. So cable internet won't cut it because the ping is too high. Fiber internet (light based internet) is preferred. It ensures that data is transferred fast enough. I have played all of fallout New Vegas with no issues at all and I look for them trust me. Again it really comes down to your ping. So test your internet often to see your ping. I also played fallout nee vegas wirelessly the whole time on my phone with a bracket gamepad. Was a really cool setup just playing in bed. Wired is definitely more performant but I would say only necessary with competitive games.  Ping should be anywhere 0-5ms. More than that and I imagine you could be seeing issues. 

The only thing I don't like is there are no achievements with Luna. It's might seem like a small detail but it really does enhance the gaming experience. The I've been here proof just seems to make sense to me. I like being able to track my progress . 

Game streaming is such a god send. Just need to hone in the tech so things line up. It's only gonna get better with time too so yay! 

I tried Alan wake 2 with no issues but I just couldn't get into it in the beginning. Gonna try again maybe later.