Also try the power command(s) in device mode. In device mode, the delays are not invoked, so if you get the same behaviour then you know it's not the delays. In "Help" mode, the delays are not invoked only when the Help is trying to fix the power of one device at a time. If it's the command(s), then try increasing the number of repeats (now nameless) under Device > Troubleshoot > xx responds to some commands either too many times or only occasionally.

Else, try leaning the power command(s) from the OEM remote in RAW mode (click on custom at the bottom of the page). If you learn a command in regular mode, it will simply pick the existing one in the database unless it was missing.