If your pool is vinyl, hardness doesn't matter. If it's concrete, plaster, etc, you'll need to raise it to between 200 and 400ppm. But don't waste your money if it's vinyl!

Your pH is high. Normal is 7.3-7.8. It may account for that slippery feeling. Use either muriatic acid (hardware stores) or dry acid (pool stores) to lower it. SWGs and plaster pools both trend toward high pH so you have to compensate.

Alkalinity looks a tad high for concrete/plaster, but get pH down and I'll bet it measures just fine.

I think your chlorine is 'WAY too low--no matter what .5 is the ABSOLUTE MINIMUM and even that is frequently too low.

Normal FC when CYA is 30 should be 3 to 6ppm, but those rules don't always apply with a SWGs. There, you have to rely on our SWG owning members.