Fix caf media by turning down optimization

Summary:
Credit @anders3408 for finding the fix
Credit @bigrushdog for diagnosing wilhelm as root fail cause

Test Plan: already confirmed

Reviewers: synergy, anders3408, jriordan001, raymanfx, donald.munn, rlasalle15

CC: anders3408

Differential Revision: http://review.codefirex.com/D377