The limitation reflects the overall trouble developers have had reaching 4K on Google's service. Red Dead Redemption 2, for instance, won't natively render higher than 1440p. It's not clear what the bottleneck is, but it shouldn't be the graphics hardware when Stadia's GPU performance is supposed to be about 78 percent stronger than that of the Xbox One X.

The problem, as you might guess, is that Stadia Pro members are paying largely for 4K support -- you're probably not shelling out $10 per month solely for the surround sound or bonus games. The resolution shortcomings will be non-issues if you're content to stick with the 1080p of the eventual free tier, but they make Pro a tougher sell even if you have the screens to do it justice.