Moving camera creates flickering on static objects caught in DOF

Hi guys, any tips appreciated. Got a moving camera inside an interior and some static objects/mats, close and far are 'flickering', an issue with Vray in Maya (that which i got around by turning GI off), but having no luck with Unity. Gotta nail it this on weekend and can't supply anything due to embargo.

i've a dome, and multiple area lights, as well as a spot, and fog enabled, and depth of field.

any hep appreciated.

cheers

 

defo in the DOF hi res settings.

 

found a temporary fix i think. was animating a few area lights, so muted that for the troublesome part. duped some glossy materials and made them more of a matte finish. works ok i think. awesome software, love Unity.