flash yongnuo 568ex

I have a Nikon D800 with a Yongnuo 568EX HSS flash, a YN622N transceiver hooked up to the flash, and a YN622-N controller in the hotshoe. When I press down on the shutter button to take a picture, my flash fires off 3 times before syncing with the shutter on the 4th time. So it syncs with the...