I had the airport card turned off before, this time went to the system prefs and turned off all the sharing, screen, file and bluetooth and the timeline played back fine with 1080sf23.98 with analog out component 529i29.97.
The one thing that I notice is that this downconvert looked different (darker, crushed blacks) then the downconvert I did with the Kona3 to IoHD.
Hate not having decks to really test everything out, always chasing problems with no time to really get a workflow and settings down.
Anyway, thanks for your help Gary.