So one of the great things about the Develop tool was I could roll through a whole session doing things like teeth whitening and it WAS fast. With the most recent update the arrow keys don't move me to the next image and the CTRL arrow key that does move me also drops me from the Brush settings meaning that I have to go and select what I want to do on each image slowing me down. Please revert back to the old way that the brush tool stayed active and you can quickly move.