My Animation Rig keeps clicking when I move certain parts

I’m tryna get my arm straight for this punch on this ik rig but for some reason it just keeps snapping uncomfortably in place - I’ve used both the normal keyframes, manually tried it off Graph Editor, and then went to Graph Editor as a final stand, but it still managed to give me issues with the intense arm clicking.



It’s so odd, and I know it’s in correlation to the IK rig, but why it’s clicking in place is sincerely beyond me.