Sprites and TextMeshPro rendering issue

Hi there, I have problems with all sprites in my built project: imported from editor, loaded from PNG, and Text Mesh Pro fonts.
It looks kind of dithered, like pixels are missing or not at the right position (see pictures).

On texts (TMP) it is most visible when you are far away from them, there seesm to be pixel holes in it:
6952859--818168--sprites1.png

6952859--818171--sprites2.png

Here you can see some pixel errors at every corner (dots on the ‘i’, intersection of ‘V’ and ‘W’)
as well as on the arrows:
6952859--818174--sprites3.png

The problem is encountered in Play mode, Desktop builds, WebGL builds. 2020.2.6 URP.
I cannot observe it in Scene Editor, and I uses the same assets and TMP in another similar project with no problem. I tested with all Anti-Aliasing disabled, 2x, 8x (in forwared redered settings, I have no Volume Postprocessing).

I cannot find any setting anywhere that would change this result, does anyone has an idea ?

Ok culprit found: FXAA is ugly