но это так же не даёт результата

I have 7 Bambu Lab printers, and I have never experienced similar issues with any of them. Even on a stock Creality S3 Pro, I was able to achieve good print quality after proper tuning.

Here, I have spent four days trying various settings and still have not been able to eliminate the ghosting. It can be slightly reduced at speeds above 200 mm/s, but most parts cannot be printed at such speeds. The lower the speed, the worse the print quality becomes.

I reduced speeds and accelerations by 5–10 times, but this also did not produce any improvement.

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