The seconds rendering of my watch faces stop working after a runtime of 2-3 days. This issue is currently only seen on F7 series devices. Other "older" models like the F6/F5+/F5 work perfectly. My watch faces display one of the most enhanced always on seconds rendering available in the store and run stable for at least 3 years.
It seems that the limits of the maximum render time is lower on the new device series or a device memory leak / performance bottle neck is causing this.
The watch faces can be found here:
https://apps.garmin.com/en-US/developer/7d8da96b-3639-4083-89ce-41e404d5bb10/apps
Thanks for your support.