I installed version 4.0 but:
- Real-Time preview (0.1s) does not work; Has always worked.
- Calculation of the totally wrong printing timing (progress bar)
- Rectangular infill only makes horizontal lines
What is happening?
This is probably an issue with installing new software as opposed to an issue with v4 that is making things go wrong.
Best to advise what your machine & OS is.....and exactly what you have done to get to where you are. Then, someone with the appropriate tech knowledge of YOUR machine can try and help.
If I understand your question the infill is called rectilinear I believe and you can add angles in the 'infill' dbx. I have 45 and -45 which alternate each layer. Hope that helps.