Several Windows 11 users are reporting a noticeable performance degradation of its SSD storage unit on the NVMe platform. This situation is not recent, since the first reports arrived in the second half of October with great variability between the different units used. Some show a reduced input/output operations per second (IOPS)others rather a decreased write and read speed performance.
On a son the user case can be read in the Microsoft community created on October 17 “MJ_JasonM”, which talks about random write performance almost halving compared to Windows 10. The problem has been known to Microsoft for about three months, at the time of writing, and there currently appears to be no workaround . Microsoft’s Neal Christiansen had indeed confirmed officially on Reddit that the dev team is working on a final resolution, in a Reddit thread referencing Windows 11 issues with slower than expected data access times and slow random write speeds.
Windows 11, performance issues with NVMe SSDs
The issue was also reported on the Feedback Hub for Insider users, where reference is made to the possibility of problems present in the drivers provided natively by Microsoft. A user wrote that all drives in their possession that use Microsoft drivers have the problem, while a drive that uses their own manufacturer-provided driver (Intel 905P) performs as specified. The isolated case of a user is clearly not enough to circumscribe the bug on Windows 11, however it could be a good starting point. However, on Feedback Hub, several articles mention issues with NVMe SSDs, in all cases related to random write speed halved, poor write IOPS performanceor data access latency.
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