TOPIC: Compressor settings quickest attack time

Is there a reason to limit the fastest attack time to 15msec on the miniDSP-HD?

I have many applications where I am using gain and limiting the threshold to increase the total loudness. I typically will add 12~18dB of compression, but with these settings and a 15sec attack time, I get severe clipping.

On the MiniDSP (original) the fastest attack time is 1msec. This would definitely be requested also on the "HD" version!