So, I grabbed my phone and just held it recording out my window into the street. My hands did not move much. I tracked two good surfaces in mocha (the street and the house opposite me) and everything was good. I camera-solved it as small-parallax and got a solve quality of 98%. But, when I put it into Hitfilm as a comp, Hitfilm's 3D floor plane was moving around the shot crazily. I tried to figure out why, and I made a point in 3D space and parented all mocha points and camera to it, but it still was moving around the shot like crazy with no pattern or anything.
I looked in the top view of the 3D space, and I saw the camera moves around a little at first, then suddenly jumps really far back, which I never did with my phone. Is there a way to fix this? Did I track something wrong? I followed all the tutorials I could find to the letter but still am having this problem. Please help! I can give more information if needed. Running latest version of Hitfilm Pro.