Thanks for sending those, much easier to see what is going on. The acceleration you have set (100mm/s^2) seems really low. It could be whats causing your issues where oozing may come into play when approaching or accelerating away from corners. Try temporarily setting your accelerations (make sure you set x, y, print, travel all to at least 600 or so)?
Also, I don't think this is the issue, but an 8mm retraction seems pretty high. Is this still configured as direct drive? If so, ~1mm should be sufficient.
Just other things that come to mind:
Is there stuttering or anything else noteworthy happening when printing that part? I'm wondering if there is a ridiculously high amount amount of triangles in that area that could cause too many short moves (some slicers filter those out, but not sure) that could bog down an 8-bit control board. I don't think this is it, but just trying to think of anything...
Based on one of those pics, it seems like its fine for the first ~10mm or so. Anything you can think of that changes at that point?
Take a look at the gcode preview for that area. Are there retractions (might be too slow with 8mm) and travel moves that correspond to that area?