Unfortunately, it seems that there is a downside to it. This is because according to PC Gamer, they found that if you were to stream 4K at 60 fps, you would consume as much as 1TB of data in 65 hours. Now, 65 hours is a long time for the average gamer who might play 1-2 hours a day, but if you play for extended periods of time, you could blow through your internet plan pretty fast.
This is because the 1TB of data is just from streaming Stadia, and not taking into account other downloads or streams or just general internet use. This shouldn’t really be too surprising given that 4K files tend to be on the larger side, and if you have an unlimited internet plan, then this shouldn’t be an issue. However, for those who do have data caps, then you might want to be careful.
This seems to highlight a problem in which our internet speeds and file sizes are getting faster, but yet our data plans still seem pretty low. More recently, it was reported that the BBC attempted to do their first broadcast over 5G, but blew through their data cap almost immediately.