Slow acceleration with louder engine noise 2016 Nissan Pathfinder

2016 Nissan Pathfinder

Automatic, very slow acceleration especially after a stop. Louder engine noise. Accelerates quite slow period. Clanking noise and bounce when shifting into park or reverse.

Is the check engine light illuminated?

My first guess would be that the transmission is not shifting correctly and is starting out in 2nd gear after a stop. This would also account for the engine having to work harder to accelerate  that may attribute to the louder engine noise. A check engine light code might guide us in the right direction.