When you parallel the fast attack, what does this do to the transients - does it let some of them through? I rarely like to hear compression grab a note, except for percussion.
yeah so if you want punchy drums 30ms attack, for snappy drums 10ms but if your drums are snappy/punchy and short i would just leave them alone or use a clipper to get rid off the rogue transients. edit sorry im tired i didnt read the parallel part so basically its a dry/wet signal you can add the compressed version back to the original giving it more RMS/body without spiking the transients too much