The old prep cook at Mama Rosa's on 5th told me to stop tasting my sauce right after adding salt
She said the salt needs a minute to dissolve and spread, so tasting right away just tricks your tongue, and now I wait 60 seconds before every adjustment, which honestly fixed the oversalting problem I had been fighting for two seasons.
Did you ever try stirring it in instead of just letting it sit? I used to do the same thing and found that a good stir does the job in like 15 seconds. Waiting the full minute works too but sometimes my sauce is already on the plate by then.