How is CoD on it? 1080p60?Series S uses a horizontal reconstruction technique for a dynamic 1440p60, so is mostly not at 1440p native, and it also drops below 60 a lot of the time. That's compared to PS5 and Series X 60fps modes which are essentially locked at dynamic 4K plus raytracing.
Like I said, I don't think native 1440p60 is something the Series S can manage for big AAA games.