MSI GS66 Stealth write speed to portable SSD and flash drives suddenly slowed significantly to around 2MBPS max. (the update window will have a high write speed for about 3 seconds then quickly adjust to the 2MBPS range)
Things I have tried:
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Different cables
- Currently using a USB 3-2 compatible cable
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Device manager
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Uninstalling USB Root devices (with reboot)
- uninstalled all Disc drives and Universal Serial Bus controllers
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Targeted SSD -> “Quick Removal” to “Better Performance”
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Checked: “Enabled write caching on the device”
- Checked and Unchecked: “Turn off windows write-cache buffer…”
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Unchecked: Power Manager option “Allow the computer to turn off this device to save power”
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Targeted SSD
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Disk Drives -> “Samsung PSSD T7 Shield…” -> Policies
- Set to better performance->checked Enable With caching on the device”
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Power mode set to “Best Performance”
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Thunderbolt device driver update
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Bios Reset
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Windows Reset (keep files)
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An SSD (T7 Shield)
- Updating SSD firmware
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Multiple USB-C flash drives
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Every port USB – C and USB – A
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USB-C on another computer
- Speed was faster (still seemed slow but would fluctuate between 3mbps to 50mbps not 150kbps to 2mpbs)
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Samsung Magician benchmark test results:
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~950 Mb/s Sequential Read
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1 Mb/s Sequential Write
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22705 IOPS Random Read
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488 IOPS Random Write
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I am unsure what has changed but 2MPBS is unusable.
