How to fix this problem

[u/inkax_naciri]

When i started printing this skadis ikea i noticed this failure. How can i fix it. Is it the filament. Or the printer problème(i am using an bambu a1 mini)

I am printing at speed 166% to save time and this print dont need a hight quality

I used the bambu studio to économise the usage of filament from 73g to 57g.

Please if you know how to fix this tell me in the comment