Microsoft's xCloud Game Streaming Looks Worse On Linux Than Windows

As noted by a Reddit user and confirmed by Ars Technica, Microsoft's xCloud game streaming looks noticeable worse when running on Linux than Windows. From the report: With the Linux User-Agent, edges are generally less sharp and colors are a little more washed out. The difference is even more apparent if you zoom in on the Forza logo and menu text, which shows a significant reduction in clarity. Interestingly, the dip in quality seems to go away if you enable "Clarity Boost, an Edge-exclusive feature that "provid[es] the optimal look and feel while playing Xbox games from the cloud," according to Microsoft. That's great for Linux users who switched over to Microsoft Edge when it launched on Linux last November. But Linux users who stick with Firefox, Chrome, or other browsers are currently stuck with apparently reduced streaming quality. That Linux quality dip has led some to speculate that Microsoft is trying to reserve the best xCloud streaming performance for Windows machines in an attempt to attract more users to its own operating system. But using a Macintosh User-Agent string provides streaming performance similar to that on Windows, which would seem to be a big omission if that theory were true. Microsoft also hasn't published any kind of "best on Windows"-style marketing in promoting xCloud streaming, which would seemingly be a key component of trying to attract new Windows users. (The quality difference could be a roundabout attempt to get Linux users to switch to the Edge browser, where Clarity Boost offers the best possible quality. But that still wouldn't fully explain why Windows users on other browsers, without Clarity Boost, also get better streaming quality than their Linux brethren.) Others have suggested that the downgrade could simply be a bug caused by Microsoft's naive parsing of the User-Agent strings. That's because the User-Agent strings for Android browsers generally identify themselves as some version of Linux ("Linux; Android 11; HD1905," for example). Microsoft's xCloud code might simply see the "Linux" in that string, assume the user is running Android, then automatically throttle the streaming quality to account for the (presumably) reduced screen size of an Android phone or tablet.

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