Having some issues with lowering brush hardness

[AlphaWolf464]

So, i was messing with different gradients recently, and im wondering if that changed it, tho it might be something else.The attached picture is what happens when I lower the brush hardness to 30 and click. See how theres that part that i labeled in red where the hardness suddenly drops off? It didnt used to do that, and im wondering how to fix it so that its a more consistent fadeaway.