I would focus on another topic. On your picture you can see long stripes of filament where I suppose that the printhead should only move and not extrude.
If you agree with this interpretation then I would suggest to check the print temperature. If the temperature is too high, the filament becomes too liquid. When exceeding a certain limit it will flow out of the extruder even without explicit extrusion. When moving long distances you can loose a significant amount of material, which needs to be replaced. This will happen during the beginning of the next extrusion, where the lack of material is resulting in a poor printout.
You may test this structure with reduced temperature, but be aware, that the viscousity of the material will increase. If this will lead to clicking extruders, then you have to reduce your print speed. The extruder assembly is no longer feasible to provide the necessary pressure for the extrusion. With the clicking the filament is slipping back, resulting in a similar effect: reduced extrusion due to missing material.
Mabye this can help to overcome your problem.