Why won't my RPMs change accordingly to my speed, both accel/decelerating?

What is your question?

When driving on highway my RPMs bounce right above 3 while doing 80mph in what seems to be 5th gear. If I accelerate passed 80mph the RPMs also accelerate and sound as if it's stuck on or skipping a gear. Then when I decelerate, more often from slower speeds in the city, it has a harsh downshift between some gears. Not sure which gears or the consistency since this just started within the last month or so. I never had this issue in the 3 years I've been driving.