I'm using Windows 10 Home 64Bit Threshold 2, I have a single 4Gb DDR3 1600Mhz stick of Ram installed in the Ram slots on my PC's motherboard, I am also using a 4Gb Flash Drive and a 16Gb Flash drive to add more cache memory to my DAW PC, Windows OSes from Windows 7 to 10 can use Flash Drives as extra system cache Ram, it is what Microsoft call Readyboost, but the Flash Drive needs to be capable of being used that way otherwise Windows won't use the Flash Drive:
https://technet.microsoft.com/en-us/.../ff356869.aspx
I think I am going to have to "bite the bullet" and invest in a couple of PCI Firewire 400 Cards with Texas Instruments Chipsets, I just had to remove a PCI card from my DAW PC, it had some USB 2.0 Ports on it and the VIA Chipset, I removed it because some of the USB ports weren't working.
I wouldn't be surprised if the malfunctioning USB 2.0 ports were the cause of my Audio Interface problems.