Hi Ian,
Here are my current settings. For testing purposes I have my display to turn off after 1 minute - just so I can see if I have resolved my issue with the computer going to sleep as soon as the display turns off without having to wait for an extended period of time.
In your post you told me to set my display to turn off never. I think you miss my issue, I want my display to turn off, especially since I have an OLED. I just want the computer to remain turned on with the display off. My issue is the moment my display shuts off, the computer goes to sleep.