A UPS is a good idea. Power failures can cause database issues. Advice is to make a backup and then do a database restore. That will clean up your database.
For your rule a couple of thoughts:
- Suggest using this driver for the GE dimmer as it exposes all dimmer features:
[RELEASE] GE Z-Wave Plus Motion Dimmer Combo Driver - move the rule into Room Lighting as it is built specifically for the scenarios you have in your rule.
Making those 2 changes may/probably not make a difference to the performance of your system. If you still have problems turn on logging in the rule and post logs of when the rule does not behave as expected.
