MSI Katana 15 B12V – SSD Performance Issue After BIOS 1585EMS2.111 (26-07-2023) Update
Hello,
I own an MSI Katana 15 B12V running Windows 11. Recently, I updated my BIOS from within the Advanced UEFI BIOS Update tool to version:
- BIOS Version: 1585EMS2.111
- BIOS Date: 26/07/2023
- (In the update function, it shows: 1.5b234aptiov)
The BIOS update completed successfully, but I’m now noticing that my NVMe SSD performance seems slow (around ~10MB/s in some cases).
System details:
- Laptop: MSI Katana 15 B12V
- OS: Windows 11 x64
- Current BIOS: 1585EMS2.111 (26-07-2023)
- Storage: NVMe M.2 PCIe Gen 3×4 SSD
- Intel VMD enabled in BIOS
- CrystalDiskMark shows very low sequential and random speeds
- CrystalDiskInfo detects the drive correctly
Additional symptoms:
- While gaming, sometimes the SSD works at normal speed, but then it suddenly goes to 100% usage with speeds dropping to ~20MB/s.
- This causes severe stuttering or long load times in games.
What I’ve tried:
Updated to the latest BIOS successfully
SSD is detected in Windows and works, but speeds are abnormally low at times
Checked in BIOS – VMD Controller is enabled
Any advice, download links, or recommended settings would be greatly appreciated!
Thanks in advance.
Posted Aug 10, 2025, 7:39 PM UTC
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