Is there a limit to how many times an effect stacks?

When I want to be super sneaky, I put on the full set of Sheikah gear (each part gives a bonus to Sneak) and then eat something that gives me sneak x3.

I'm starting to wonder... is there a limit to how much some effect can stack? With my setup I'm at Sneak x6, but did I already pass the max sneak effectiveness?

Solution 1:

All buffs come in several stages. Look at these icons on your inventory screen:

See that line below it, how half of it is light grey and half of it is dark? That means you have a "level 1" buff out of a maximum two. Other things like Movement Speed have three segments like this.

Both equipment and consumables will add to this buff meter. There doesn't seem to be any added effect if you exceed the maximum.