Vibration issue

I have a 2016 Tacoma Offroad DCSB with just under 50k. I am occasionally getting quite a bit of vibration when I am accelerating between 15-25mph. It doesnt seem to matter if I feather through that range, or accelerate normally. If I accelerate fairly hard I dont seem to ever have the issue. It also seems to cut out if I accelerate hard once it starts occuring. Id say it happens about 50% of the time. Sometimes its not much, and others it feels like Im bouncing up and down an 1-2in. Started experiencing this problem out of nowhere about 500 miles ago. Any ideas?

 

Im just starting to have this issue to. 20 to 35 mph doesnt matter what gear im in. If i coast and let of the gas or put it into to neutral it goes away. I have a 2 inch lift but its been on there for like lik 40k miles.

 

So my issue went away. On one acceration where I was kinda slowing my acceration probably around 40-45 I could hear the engine going in kinda very consistent rymthic kinda sputter where it sounded like the revs were pulsing for about 2 seconds. I thought I heard it in the past one single time but its pretty faint wasnt sure what I heard. This time it was pretty noticable since I had less engine and road noise. I threw some Techron Fuel Injector Cleaner and havent had the sputter or the weird bouncing on acceleration since.