Audition CC Dropouts in Final Mix

I have been trying to figure this one out for awhile and I am open to suggestions.  I produce a podcast and random drop outs show up in the final mix.  I do pitch shift the vocal track and I know this is processor intensive so I pre-render that track and send it to an FX bus for eq and compression using Izotope elements. I'm using the lastest version of Audition running on windows 10 home edition with a core i7 and 24 gigs of ram. I use Samsung solid state 250GB SATA drive.  The pitch shift is done with the internal Audition effect.

Any suggestions would be appriciated.