I'm coming from an Asus Maximus VII motherboard/i7 4790K to an i7 6700K/Maximus VIII. I never had any USB 3.0 issues on the VII motherboard. Data Transfer speed on my SSD to my PNY 128GB 3.0 Stick averaged about 70MB always. Now i'm getting 20MB on the Maximus VIII board. Transfering from my PNY USB 3.0 to my SSD use to be 160-170MB on the VII. Now i'm getting 120MB or less on the VIII.
I have all the drivers installed, AI suite 3.0 installed, Turbo enabled.
I don't know what else to do.