Some have reported improvement by upgrading the EVO firmware, others say it has made no difference.
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Windows 11 in detail: Incremental upgrade spoilt by onerous system requirements and usability mis-steps.
Some users are finding that disabling VBS (Virtualization Based Security, described here) improves matters – which should not be interpreted as a recommendation to do so. A few days ago, a user reported a 60 per cent drop in random write performance with a Samsung EVO 980 Pro, but no issue with an EVO 970 Plus installed on the same PC. Nailing down the exact reasons for the drop in the performance is challenging. "I am on the Microsoft file systems team and am investigating this issue," said the first comment.Īnother user reported more severe issues, with "4K IOPS write down by 7 times," using the popular CrystalMark benchmarking tool. The problem was reported on Reddit at least three months ago, before the official launch of Windows 11 in October, with a user showing that on a 4K 64 thread write test, measuring the ability to write 64 4K files in parallel, Window 10 reported 1,600MB/s but Windows 11 could only manage 91MB/s. NVMe (Non-Volatile Memory Express) is storage protocol that uses PCIe (PCI Express) to connect to the CPU, with more than twice the bandwidth of SATA interfaces and support for multiple I/O queues. Samsung NVMe SSD drives are among those reported to be slow on Windows 11