What does this do in msi afterburner

So I updated my msi afterburner and now I got this new icon I can click on but have no clue what it does anybody know what it do?
image

What ever it does it seems to be keep temperature down

This will limit your GPU’s power / performance when it reaches the temperature, so it can cool off. Note that although it is cooler, it may be less performant.

It seems to keep my same hashrate and lower temperatures so idk but what ever it is it’s nice to have and really nice feature

Ok yeah I see what you was talking about it seems to lower core clock a lot and if I set it to target 70c ect amd the core clock goes below 1100mhzs it will lower my hashrate a whole lot thanks for your information