yeah, i would go down to 2.5seconds.
I am getting mostly 80% on d5b at 2.5seconds.
out of 15games, i might get 1-2 (100%), 1-2 (65-69%), 1-3 (70s) and
the rest 80s and 90s, without starting any games over. The first 3
games are usually lower scores than the rest of my 15 scores.
i would train audio back 6 manual mode--slow the speed down, increase
the trials to 200, close your eyes, and just keep doing it, losing
track, starting over (not the game, just in your head)
i would use two portable versions of brainworkshop--one configured for
audio, one for dnb5, put shortcuts on the desktop or whatever.
i have been 'stuck' on dnb5 for more than a month, so dont fret.
as you increase the speed of dnb5 you will notice that you get ahead
of the game, so when you get a hiccough, you were already ahead one
position so you can usually regain your place--you will see what i
mean after awhile as you improve. i really dont know how to explain
the phenomenon.
presently i am just doing dnb5, not the audio, but i did it for
awhile.
i am not as serious at dnb as i used to be......personally, i will
have achieved my goal if i can get mostly 80s on dnb6
at tht point, i plan on just maintenance.
be well