According to a new report, Windows 10 version 1903 is only installed on 6.3 percent of Windows 10 PCs out in the world. That’s just a 5 percent gain over last month and it puts this feature update on pace with its slow-moving predecessor.

“Windows 10 May 2019 Update (version 1903) has gained around 5 percent [usage] since last month and is now on 6.3 percent of close to 100,000 PCs surveyed,” the latest AdDuplex report reveals. “This puts it on par with the pace of [Windows 10 version] 1809 one month after its re-release. And this is, probably, not a good sign as we’ve seen how [that] ended (just over 30 percent install base before the next release went out).”

By comparison, last month, Windows 10 version 1903 hit just 1.4 percent of all Windows 10 PCs out in the word.

AdDuplex does note one curiosity to these numbers: About 65 percent of the PCs that upgraded to Windows 10 version 1903 using the May 2019 Update were previously running Windows 10 version 1809. This suggests that users on the previous Windows 10 version will not be stuck there while older Windows 10 PCs are upgraded.

AdDuplex also notes that the data makes it clear that developers will need to support three Windows 10 versions going forward: Windows 10 versions 1903, 1809, and 1803. And that’s interesting, given that one of the goals for Windows 10 was less fragmentation. But there are now several supported versions of Windows, when you include other supported versions of Windows 10 plus Windows 7 and Windows 8.1. So Microsoft’s goal has not, and will not, be met: Fragmentation is worse because of Windows, not better.