1) In the device power settings, select the discrete method "A button on the remote for On, and a different button for Off" (instead of the One button for both option), then for the Power Off function, select "My device needs more than one command to turn it off". Note: You device may support the discrete PowerOn and PowerOff commands. Test them in device mode.

2) Select "Leave unused device on" in the Activity Change Options - non selective method
or add the desired device(s) in the desired activity(ies) - selective method.
Note: To add a device to an activity, review the activity and select "Yes, but I want to add more control of options and devices for this Activity".

3) Try reducing the "number of repeats" (now nameless) under Device > Troubleshoot > Device responds to some commands either too many times or only occasionally.