I've had engines that tic before, and this is different. It doesn't sound like normal cam/valve train operation. Mine is inconsistent.
It started before any oil change and hasn't changed through two of them. First change was dealer-done, Motorcraft 5w-20. Second was done myself, swap to Mobil1 full-synth. Never any difference.
My tic only seems to happen after a warm startup. After some driving it goes away. When it does tic, it's not consistent with RPMs... Seems to come and go. It's not audible in car unless everything is shut off, but when driving near something that reflects sound it is plainly obvious and out of the ordinary.
I'm not convinced it's something super bad for the engine, but it sure is annoying, especially when the car looks so good and cost so much (relatively speaking) yet rolls up on someone sounding 10+ years old.