After the first aag, the shot that stops you from falling oob randomly triggers this panel (https://gyazo.com/392c0732bfe395c02eb636dc2f3dcfab) to open. I tried shooting it in a bunch of different spots but couldn't find anywhere consistent.

If the panel opens you wanna try to shoot sligthly later after jumping through the ground portal to aag. It doesn't have anything to do with where you shoot the portal after the aag, the only variable is your timing for the aag shot.

Thanks, got it pretty consistent now.