I run pseudo patterns at fast speed myself. I can get to the 8th key 11th key 16th key on normal Pac and the second bread 1st pancakes tenth pancakes on Pac-Man Plus.
I am actually at the point now where I am scoring higher on average with Pac-Man Plus than I am with Pac-Man. It is probably the fact that the bonus fruits act as double score power pellets. Of course after the 9th pancakes they stop doing that, but they still make the ghosts change directions.