James,
Excellent hunch. My meter app display is solid. So I set up logging with no wait and the log values were solid also. (not really a useful configuration for practical applications since it created multiple log files, but you already know of that issue). This probably validates it is the wake-up settling time. Since I could not find that other posters in the forum were having this issue, I guess my meter may lean a little towards worse case sensitivity in this area. So, I would be willing to test any settling time firmware changes you make in the future. Thanks.
– – -Duane