I am now using MT9J001 with a USB2.0_UC-391_Rev.D shield. I would like get pictures with 3664x2748 resolution. Is it possible to modify the config file to let the frame rate be higher than 4 fps? What is the highest possible frame rate with a USB2.0 shield? If I switch to a USB3.0 shield, can I get a frame rate more than 7 fps?