I have a very similar model, the AC68P, and the only times I've had to reboot it since it was installed in March was for configuration changes, and that was through the web interface. Next time try rebooting your cable modem instead, maybe it's not the router that's to blame?
I have the batman router for more than a year and I've power cycled it once. Realistically I don't know if the problem was with the modem, the router or my computer.