Wavy infill and top layer

Flagship K Series Creality Flagship K1 Max
1

Hello,
I’ve run input shaper many times but I can’t get rid of the wavy lines.
Here is what happens:

IMG_A1E82A609191-1
IMG_A1E82A609191-11179×1961 161 KB

IMG_5537462CA490-1
IMG_5537462CA490-11179×2556 272 KB

and this is what my old printer did:

IMG_1917
IMG_19171920×2189 350 KB

Much better in my opinion.

What can I do to reduce the wavy diagonals?

Thanks in advance

2

There are few things to fine tune it.
Z offset
Print speed
Temp and flow rate.
Ironing on top surface.
Infill overlap

3

Thanks for the answer.
I could print slower (I think this was 150mm/s) but that would defeat the purpose of a fast printer.
Ironing wont fix the problem with the wavy lines. It would hide it a bit at most.

I think the problem could be with the input shaper?