Yes, it's the exact one I'm using. And you're welcome. It's very evident that speed is the issue, and without an oscilloscope, it's the best guess I've got. Not much of a guess anymore lol.
EDIT: About the code I added to the top of the setup: yes, it did shorten the blink to about 7.8 seconds. What does that mean, though? Can you use that to modify the clock speed?