The problem is that in the renderer does not work. When the engine bugs will end, I’m already frankly tired of them, you spend your time working with lighting and in the end the result is completely different
Are you certain it’s a bug? That does not look like artifacting, it looks like a settings difference.
Assuming you’re using MRQ, the render settings you have can make the scene look substantially different than the viewport.
Is the MRQ a path-tracer? Lumen? Some other indirect lighting solution? No indirect lighting and all analytic lights?
I used a different setting, no difference
A different setting for what?