    Sets the attention processor to use feed forward
chunking.  enable_freeu  < source > ( s1 s2 b1 b2  )   Parameters   s1 (float) —
Scaling factor for stage 1 to attenuate the contributions of the skip features. This is done to
mitigate the “oversmoothing effect” in the enhanced denoising process.   s2 (float) —
Scaling factor for stage 2 to attenuate the contributions of the skip features. This is done to
mitigate the “oversmoothing effect” 