Two recommendations: 1) Mount it lower. I aim for the outside of the cage to be about an eighth of an inch above the large ring. When you lower it, you'll probably have to adjust cable tension 2) Check the orientation of the cage. The plates have to be parallel to the chain. To adjust, loosen the derailleur clamp and rotate it until things are lined up.
The other thing that could affect shifting is the step between the two outer rings being too small. Sometimes inner part of the cage will hit the middle ring when shifting up. This could explain the jamming you see when the FD is lowered.
Last edited by Moe Zhoost; 07-31-22 at 04:05 PM.