Badly wall bridging / over-extrusion during 0.2 std. profile

Hello Colleagues,

I have some problem with my print. I am printing a pencils organizer with PLA+ esun on standard 0.2 profile in bambulab studio slicer. The problem appears also on PLA basic bambu filament (green) - attached to my X1C. I am newbie in bambu printer becosue I already started 2 weeks ago. Below you can see the pictures of my print which looks badly on walls of septumums (barriers) - it looks something like badly bridging / overextruding and also appers some stringings.

Is there any way to improve the quality of a walls?

I tried several thing:

  1. I reduced the nozzle temp from std 220 deg.C to 205 deg.C (that improved the stringing a litter bit),
  2. I also dryied my filmanet (12h) inside X1C, but that no help at all (the same problems still availible)
  3. I also tryied to reduce the travel speed and accelaration speed about 50% but this also not help.

What is strange is that some walls (selected on green marked on picture) are fine - there are located in the middle of the print

Can I ask you for support for figgerout the problem?