I tried to 3d camera track my footage in blender and my solve error was 1.1846 and I didn't think that was that bad. I set the lens to 14mm because that was the lens I was using with my Panasonic g7, I did the refine K1, K2 thing and I set three points as the floor and set one as the origin so I don't know what went wrong. I was using a Steadicam as well so I think it was pretty stable
What it looked like:
I just started blender not long ago so it is probably something obvious lol