Cya of 35 counts as 40 for chlorination purposes so slam level is 16ppm.
Ch doesn’t increase that quickly unless you’re using calcium containing products.
ie. Cal hypo- cal hypo also can cause also cloudiness when used in large amounts further complicating matters.
Metal out (sequestrants) also can cause cloudiness.
Phosphate removers also cause cloudiness.
Use the DE as poolstored suggested to see if that helps with clarity.
If that doesn’t help & you’re still passing the
Overnight Chlorine Loss Test
Definitely consider a large water exchange (do the no drain method) to get the ch way down, reduce the copper in the pool & dilute all the floc,clarifier, sequestrant, & phosphate removal potions you have added. All of those are expensive & unnecessary in your situation (except maybe the sequestrant if you have metals in your fill water).
Since you added more gummy stuff (floc/clarifiers)after changing your sand you might wanna do a deep cleaning of the sand as well.
Deep Cleaning a Sand Filter