RE: Core One skipping steps/Layer shift
I stumbled upon this thread after I'm having the same issue... but mine is at exact same height.
I did belt tuning, in-fact.. more than 5 time in last 4 weeks to reduce VFA, also calibrated IP and phase step.. Between the first and second, I have tuned belt and between the 3d (you will see a video) I loosen belt and tuned again with prusa's built in manual belt tuning.
- I sliced using Orca slicer
- Did turn on the Avoid wall crossing
- PLA 0.2mm FAST profile
- NOT IN VASE mode, I wanted to print with small infill..
So, did you try to turn "avoid crossing perimeters" OFF? According to multiple posts above, that option seems to be what triggers the problem in PrusaSlicer, causing it to generate unreasonable moves in GCode. I am not sure whether BambuStudio and OrcaSlicer have inherited the problem from PrusaSlicer, but being based on the same code, they might well have.
Not sure why you mention Vase mode. I don't recall seeing that mentioned as a potential cause for the problem?