MOTM

There are only 2 solutions:

a) your external gear (headphones, amps, mixer, whatever) is not as sensitive
b) you have to "slow down" the edges of the transient, because what you are 
making IS a transient

As JH pointed out, a 'kluge' for (a) is getting a good high-value *film* cap 
(like a 4.7uf poly) and using that on the output cable of the VCA. You might try 
even a 'Black Gate' 10uf (bring $$$).

It's easier to mess with (b), using cap C9 on the '800. You can do 2 things:

1- make the cap a 10uf NP, which slows down all 3 times (A/D/R) so that once the 
pots are off the '0' tick, the times are long enough

2 - make the cap *smaller* (say 1uf or even 0.47) as your "pounding bass EG". 
Now, if you do this, what will happen is from ticks '0' to probably '2' the time 
constant will be super fast (no help) BUT you will be able to 'dial in' a time 
that won't click and still be "snappy"

Paul S.