Port FS22 Dynamic Headerspeed to FS25

Makes the header spin more realistic vs combine speed, now it spins at same speed whole time. In a real combine it adjusts to how fast you drive during harvest.

From Mod description:

This Mod allows the Reel from the Cutter to dynamically adjust to the travel speed.
To do this, you can adjust the factor in the Game settings to adjust the advance for better harvesting result.