I run a build using an axe/warhorn, greatsword, skirmishing: furious grip, nature magic: IX, and superior runes of fury on my armor and I have noticed that sometimes when I switch weapons, use the warhorn skill “Call of the Wild” or the elite skill “Rampage as One” I do not gain more fury at times. I am a level 80 human ranger and I was solo farming in the cursed shore map and I was noticing this.