Forage Pickup by crop type

[antler22]

I'm struggling to find a way to adjust the forage harvest performance for different windrow types. Grass and other custom ones limit the forage harvester speed significantly (1-2mph with JD 9900). I turned the forager coefficient up to 35 and that works for now, but that will make the speeds too fast for corn/maize or direct cut harvesting. I also don't want to adjust those individual fruits because that will affect combine performance for maize.

Is there a way to improve swath pickup on foragers, and to customize that for different windrow types?

Thanks!