5k iMac, 2. Monitor and dpp4. = Slow ?

[Eric Dienesch]

Hallo,
normally i use lightroom, the Last days i tried a Little bit with dpp4
but the Workflow is very Slow , it Takes about 8 seconds only to get a Sharp picture. And i mean normal 1dx Raw files ! All Action is not fast, also batch copy and Development .

And i mean not from the Card, but allready saved raw files from the harddisc ,
i have an Late 2014 5kiMac ( or is it early 2015,sorry) , i7, 32gb RAM , 3tb fusiondrive and a Dell u2711 as Second Monitor

my retina mbpro from 2013 with 16gb is faster !!!
Any solution ?

thank you !