Encountered the same issue today. I am running Magic Bullet. I had a look on an adjustment layer. The flicker was only on one or two clips so I just cut the adjustment layer out above those two clips and added the look to the two clips themselves. It looks like that is one fix. Both clips had the warp stabilizer effect on. It seemed to exacerbate the issue, but now that I’ve cut the adjustment layer out over those two clips no more flicker
Clover Carroll
New Story Media
http://www.newstorymedia.com