You've got me intrigued,but also wanting more specifics. Did you share any details of this anywhere you can link to? (don't worry if not, I'm just nosy)
https://www.parallax.com/propeller-2/ tons of improvements in terms of memory access etc, but pay attention to the "64 smart pins" section specifically. I use them to buffer out sub-microsecond waveforms 3ms at a time. I send it off to the smart pins then my cog is freed up for other things. I also previously used some for an HDMI GUI.