Good job, the feeling was noticeably different.
I guess this dll exaggerates the higher frequencies? Would it be possible to add a cfg -file to adjust the amount of FF -correction?
To me it feels a bit too much like "on & off". Fast transients (?) are felt strongly, but there is maybe too much dynamic range, that is to say the constant (low frequency) force feels too weak compared to sudden "spikes".
Why does the ingame FF have to be set to 25%?
What are your settings in logitech profiler?