As I wrote elsewhere, just see to it that your widgets don't try to query GPS. If possible, either set them to last position or manual coordinates input. Also, having as few watch faces as possible helps. As for the power off issue, try a reboot by pressing and holding the button for at least 15 sec. To power up again press and hold again. Hope this helps somewhat.
Make sure you are running the latest FW on the devices. There a problem with the app store when it allows installing CIQ apps on devices without the proper firmware.
If things get stuck, hold the button for about 20 seconds, and the watch should power down on it's own.