Poor quality at the bed edges

Flagship K Series Creality Flagship K1 & K1C
,
1

Hi there,
I’m relatively new to the 3d printing community so I would like to say “hello”.
I’ve bought the K1C printer and it’s a blast in comparison to Ender-5 which I had borrowed from my friend. It worked out of the box! Quite happy with that :slight_smile:

Recently tried to print some larger models and encountered some problems. Best way to show the problem with photos:

IMG_20250319_170053
IMG_20250319_1700531920×864 161 KB

IMG_20250319_170059
IMG_20250319_1700591920×864 68.2 KB

IMG_20250319_170102
IMG_20250319_1701021920×864 64 KB

As you can see the PLA print quality is getting pretty bad on the edges of the bed plate. When printing smaller objects at the center it’s superb (in my opinion).
I haven’t fiddled with the printer settings. This happens even if I calibrate before every print.
Do you have any clues or point some advice?

Thanks in advance!
And one more time: Hello to everyone!