The last move that Google has made and to which nor did you just make any sense We find it in your movie buying and rental service. If you want to enjoy any of the movies that you have purchased through Google Play Movies through a browser (regardless of the version you have purchased) you will run into a problem.
Turns out Google is limited maximum display resolution to 480p at most, even if we had bought the movie in HD quality. One might think that this limitation is due to internet speed restrictions in many countries due to the coronavirus, but YouTube's support team suggests that the problem is not there.
In response to a user, a worker from the YouTube support forum (where the available movies have been integrated into Google's movie rental and purchase platform), states that they had to disable HD playback due to a glitch that they have discovered recently, without delving further into the matter.
The limit will be reset once this problem is fixed, a fix that can take anywhere from days to weeks. Google is likely you are performing a test that you have not reported. The quality limitation to 480p is not available on mobile devices, Android TV or Chromecast, so the response this user has received sounds like a Chinese story (pun intended).
We do not know the real reason why Google is making these changes, but it is probably related to Google TV, the new device that Google presented a few weeks ago and which represents an important change compared to the Chromeast, since integrates its own operating system.