Hello,
the manuals also state that the minimum DPI is 4000 with which the S1 can be used. I personally had already tested 1600 and 3200 and went back to 5000 DPI because it felt better. 25000DPI is only for faster movement in melee combat, however, it may cause pixel skipping when aiming and shooting accurately. I suggest you test between 5000 - 8000 DPI.