I felt Stadia had potential but I also thought they should have tried a game subscription model rather than the one they went with.
I very recently tried Expedition 33 with GFN and I tried turning the graphics all the way down and the lag seemed unbearable. It very well could be me, but I have a fibre optic connection with typically low ping. It could just be where I'm situated or maybe there's more configuration I didn't figure out. I know others still like and use the service.