I dunno... I've seen some guys come in at 50 and crack the nut pretty quick on A-M. Everyone is different tho.
That said, without focus, without work, it is slower process.
If you're grinding it out, it has to be an everyday thing, it has to be an everyday push. 5 minutes, all in is better than 30 minutes 50%.
I find one thing and just do that when I'm really pressing.
I do spend a bit of time just playing with the blue gun while on conference calls, etc.
The classifiers are only 5% harder in most cases. Don't worry about it.
Run the numbers, some just require you to speed up a bit.