Pixlated image quality

Hi ,
I have noticed that the still image that i render always has this pixlated effect although iam rendering 4k , it is kindda wied effect that i dont face when i am using a software like corona for example , is it a gpu rendering issue , or there is a setting that I can change to get a better smooth images .

I have tried to enable abd disable Super resolution setting but it had no effects on the results , I also updated my graphic drivers , still the same , Iam kinda lost here , if there any solution please let me know .

Thanks ,ibrahim


D5 Render Version: latest
RTX 4080 super:
Driver Version: 577.00
pixelated image quality:

Did you enable D5 SR image Rendering beta during rendering cause the quality
under Preferences Widget,
cause the quality to be very bad, fast rendering but at a cost,
I never used it ,
If it’s that,

i tried once with SR enabled and another time with it diabled , didnt notice any difference !