[HELP] White text - strange ringing?

[Selur]

I see:
a. halos
b. ringing
c. chroma noise
first thing I would do I drop the saturation to 0.
Then I would add a few YAHR calls.

Then I think about deblocking and denoising,....

Cu Selur

Ps.: https://www.avartifactatlas.com/ might be interessting.