I purchased a Class 10 card in hopes of getting faster write speeds via usb from PC. They haven't changed. Still topping out at 1.5. When I run a R/W test on the phone I get Write Speed of 8.56MB/s & Read of 9.7MB/s. This would indicate that the card is capable, but for some reason the connection to the PC is slow. I've tried multiple cables & made sure the USB ports were USB2 (Even tried a USB3 one). Still stuck at 1.5MB/s Any suggestions?