I alredy found it and do all things. Btw i read now is good to enable game mode if you updated yourr windows. However i didn't nothing different in those months, always the same settings and all good. Now, afteer update, i got this problem. I tried to clean all my scenes, install an old version of obs (and i lost all my tools, scripts ecc :/ a great problem). And now still i get the same problem. I really don't know how this is possible. The only new thing i did was install valorant...