Is there a way to scale the noise on landscape sculpting? If not is there a way to lower the polygon count on a landscape actor?

[Unisink2020]

I created a big landscape actor but when I try to use noise to make slight consistent variations in the height, the level of detail is too much and does not look smooth. Scaling either the noise brush or lower the polycount on the actor will work but I can’t figure out how to do either.