I’ve listened to 3 hours of CP2077 performance reviews (it helps me work, I swear). A medium quality 1080p60 target on Vega 56 doesn’t ring true to me. It must be missing the frame rate target 100% of the time.
Yet 60fps 1080p medium is possible even on the RX480. It's not like the game requires a lot of performance, it's more that performance is inconsistent and while some players might get great performance, others with the same hardware won't
That's what they claim it is, I'm not very attuned to that stuff so can't really say. They automatically refund before some time threshold if you want to try
Gamers Nexus has made interesting pieces on Stadia performance in the past. I don’t think they have public plans to do more work with it. Subjective experience is the most important metric.