Your boost converter layout could do with some improvement.
Basically, you want to keep the ground of the input capacitor, switch FET and output capacitor on the same large bus, such that the output current "loops" through from the input capacitor, through the inductor, through the diode, through the output capacitor and then return it into the input capacitor.
Then you want to take a single analog/point ground for your feedback network and tie the switcher's ground to that. All your feedback/sense circuitry should return to this position.