I recently turned my pi into a standalone network following this guide: https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md But now when I open a web browser, or plug in a usb device it crashes and reboots and sometimes even gets stuck in a boot loop causing to to pull the plug and restart it. (USB crashes happen about 50% of the time something is plugged in). I really don't know where to start troubleshooting this problem. Where should I be looking? Any tips or things to look out for?