I would suggest caching only for these UNA files:

    location ~* ^(/cache_public/|/plugins_public/|/modules/|/studio/|/template/).+\.(jpg|jpeg|gif|css|png|js|ico|svg)$ {
        expires 1M;
        access_log off;
        add_header Cache-Control "public";
        try_files $uri =404;
    }