the wall is nicely print but there is something wrong with the infill i don't know where
at 1 point it nicely straight wall so i think its not because of backlash
all is printed at once
here is the setting for style
skin thickness 1
loops 3
infil 100%
ex width 0.4
infill ex witdh 0.4
layer thickness 0.2
flow tweak 1
extruder gain 1
bed roughness 0.1