When stopped and accelerating normally I hear an audible clunk, but feel nothing. If I gently accelerate from stop it does not occur.
Have the universal joints on the driveshaft checked. Also, have the CV joint up front checked as well. If you want to do it, You could raise a wheel off the ground, and rotate it back and forth, looking for a gape in motion due to a loose joint. That’s the joint that should be replaced.