Okay...tried Lime Away 2 x and still just bubbles and hardly a flush.... replaced the flapper valve with little improvement. Water fills the bowl and very, very slowly exits the bowl. Other than buying a new toilet, I have no idea. Should I try replacing the flush valve? I have an American Standard toilet and probably the cheapest one they make, as this is builders grade, installed in a new home.
I guess it's time for a new toilet.