I have built a few desktop rigs with various configurations, on Win 10 x64. One thing I realise that's common is that my WD/Seagate USB 3.0 hard drives / Lexar Professional USB3.0 SD card readers sometimes revert to USB 2.0 speeds (30mb/s) even though it is plugged in to a 3.0 / 3.1G2 port.
This happens regardless whether it is a native Intel controller or Asmedia controller. I presume the Intel drivers should be auto updated as I cannot find any standalone drivers for Win10.
Is this a Windows issue? very sure it is not my hard drives'/readers' issue since they exhibit the same problem with different rigs.
screenshot below is a transfer from my main 850 Evo SSD to my WD Passport ULTRA 3.0.
Edited by randomystique, 04 August 2017 - 10:34 PM.