Stripes on the outer wall

Hi, i have problém with stripes on thé walls. Its PLA. I tried different speed and temperature settings.
Please, Does anyone know what could be causing this? Thank

Not very good photo, but here is a list to check ordered by priority

  • Check that outer wall is printed at the same speed( on the sliced model select speed to see ) - may have to reduce the outer wall speed
  • Dry filament
  • flow and K factor calibrations - calibrate for the filament
  • reduce outer wall speeds
  • Aux fan - off
  • some drafts in the environment

Hello - did you ever solve this issue? I have the same problem: