Hi out there !
This topic has been a while but I want to share my experience:
I was faced to similar problems, my outer wall didn´`'t connect with the inner wall. I was able to fix this issue a bit more, not perfectly, but acceptable:
- increase the infill overlap to at least 30%
- enable ironing to smoothen and connect the outer wall to inner parts:
Since I use this configuration, I had good results by small expenses of increased time and material (around 5-10% ?).
Further settings can be considered: