As can be seen on the xyz cube, the over hangs in the letter are twisting out and into the shape. I'm not sure what it is, the Grey one is my current one with the problem. The white cube is done on an ender 3 from a number of years ago in comparison it is a lot better.
Related I think it might be a bridging problem. The quality of the first layer or two that was printed on a support is rather poor. The part that's suppose to be a circle ends up being a triangle.
I've tried lowering speeds on overhangs, adjust pressure advance, and extrusion multiple with no success.