1.Do you have PA and Flow calibration both enabled.
2. does your CFS for the spool match the values of the filament?
3.What brand/type of filament, how dry is it
4.what nozzles/presets are you using
5. What bed /build plate type are you using (does software match)
6. run a layer 1 print calibration test stl (on creality cloud for k2) and manually adjust z offset, flow, and temperature via K2 menu while its printing