What does "Visibilitycommands" mean in the built in GPU profiler?

In my GPU profiler, the top row says “Visibilitycommands” and its quite costly (average of 15 ms currenlty). Ive searched google and docs quite a bit trying to figure out what it is so i can fix it, but I have found nothing. Im not sure if its just called something else by devs or if im looking in the wrong places, but its bogging me down and now am also very curious.