Windows 11’s latest update works towards fixing issues with the PC Xbox Full Screen experience

Summary
The Xbox Full Screen Experience (FSE) offers stripped-back UI for easier, console-like PC gaming.
FSE still experiences glitches (window sizing) on Windows 11— Microsoft is investigating.
Performance gains are minimal with FSE, though ROG Xbox Ally X stability with the feature has improved.
As a recent convert to PC gaming from the close-off, simple world of consoles, I’ve grown to appreciate the Xbox Full Screen Experience (FSE), both on my ROG Xbox Ally X and my gaming PC. It’s far from perfect, but it strips back a lot of things tied to PC gaming that I just don’t want to deal with, and makes it far easier for console players to easily jump in, especially when it comes to the Xbox Ally X.
In the latest release notes for Windows 11 Insider Preview Build 26220.7653 (via PC Gamer), a known issue the update notes describe as “some apps [behaving] unexpectedly when using FSE, particularly those that expect to be locked to a given size or launch additional windows,” is in the process of being fixed. Microsoft writes that the Insider Team is “validate scenarios and as such keeping the known issue active for now.” So while the glitch hasn’t been fixed, it appears Microsoft is at least aware of it.
While Microsoft presents the Xbox Full Screen Experience as a notable improvement to PC performance thanks to the feature minimizing background tasks and other apps, alongside a revamped UI, Adam Conway, XDA’s Lead Technical editor, found that “performance barely improved if it did at all” when he tested FSE. Still, I’m a fan of its easy-to-use UI, especially when I want to just play games and not mess around with settings on my PC. That said, I have run into the exact issue described in the Windows 11 Insider Preview build notes several times over the past few weeks.
In some ways, the Xbox Full Screen Experience still has a long way to go
Rumors point to FSE powering Microsoft’s next-gen Xbox
The Xbox Full Screen Experience launched on Asus and Microsoft’s ROG Xbox Ally and Xbox Ally X first before making its way to other Windows 11 handhelds like the MSI Claw and PCs a few months later. While the Xbox Ally X version of FSE was a bit of a mess at launch, several updates have really cleaned it up over the past few months, especially as far as stability is concerned, so I’m hoping Microsoft can do the same thing with the PC version of the Xbox Full Screen Experience.
Several rumors point to Microsoft’s next-generation Xbox basically being a PC with the Xbox Full Screen Experience, so it makes sense that Microsoft is taking FSE very seriously. Recent reports point to the PlayStation 6 and next Xbox being delayed to 2029-2030 due to the ongoing memory crisis pushing up the cost of DRAM.