Strange lines on curved prints

Hello there people.

I am new user of A1 Mini and new in 3D printing as well.

Last month I had an amazing time with my A1 Mini but I have encountered an issue in a couple of my prints.

As shown in the pictures I uploaded there is a strange line on some parts of the prints.

I use the designer settings and I haven’t changed any speed or temprature values myself.

Other prints that don’t have curves are printing flawlessly.

I used Bambu Matte PLA Desert Tan and Matt Late Brown on both the prints.

Please any information can be useful.

Hi, It looks to me like some Z banding. there are other posts in this forum of people that hace a similar issue and how to solve it.

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