question about "fix deform wiggle"

Dear all,

I'm wondering what I am doing is right when I use "fix deform wiggle". I am confused about the frequency calculation.

for example:

units real
...
timestep 0.2
...
fix 4 all deform 1 xy wiggle 2 80 remap v

From the code above: the cycle is 80 fs, and the frequency is 1/(80e-15)=1.25e13, right?

And if it is right, I want to simulate in a low frequency, such as 10 hz, then I have to increase the value 80 to a very very large value, which is very time-consuming.