ender 3 v3 ke new hot block kit

hi,
i have bought the following hotend for my ender 3 v3 ke
as the old one failed (didnt heat up)
https://www.aliexpress.com/item/1005007124219201.html?spm=a2g0o.order_list.order_list_main.22.59f618029wQNbc

at first the temp where jumping all around from 208 to 230

i followed this tutorial on how to calibrate the pid:

manually setting the hotend at 220 c the temp is stable (± 1c)

but when printing:
i usually print at 220/60c
after the first layer i see the TARGET temp drop to 206 and then jump to 214 and after few seconds the target temp changes from 216 to 219

why doesn’t it stay at 220? why does the printer set the target temp lower then what i want?
when i set it manually it goes back to lower target temps

i used my slicer setting - all layers at 220 and bed at 60

thanks
yarden

Ender-3 V3 SE/KE Ceramic Heating Block Kit-60W

update - i just used old sliced file from the printer memory and the temp was perfect on 220c
i am not sure why on new sliced files the temp is jumping,
for slicing new models i used
the newest creality 6.1.1.2277
and older creality 5.1 .4.10249
and the temp were unstable

i have found why temp is changing
in the filament settings auto temp was turned on
i have never noticed the temp changing until now