I read a article on another site so I just copied and paste for others to read. The only thing I don't like is they don't say who the Devs are that said this.Are they big peeps or just some small time peeps?? you be the choice..
Anonymous developers have labelled the current state of Xbox One’s graphics drivers “horrible” and claimed the difference between both the Xbox One and PS4 is “significant” and “obvious.”
In a piece about the performance differences between Microsoft and Sony’s new consoles on Edge, a number of unnamed developers have said that while the platform holders continue to refine both systems, Sony’s is currently easier to work with.
According to one source, Microsoft has "been late on their drivers and that has been hurting them.” Another source says that the Xbox One graphics drivers are "horrible".
It is also being reported that the PS4’s memory reads between 40-50% faster than Xbox One, and that the PS4‘s Arithmetic Logic Unit (ALU) is around 50% faster than Xbox One’s.
The article says that a “platform-agnostic development build can run at around 30FPS in 1920×1080 on PS4, but it’ll run at ‘20-something’ FPS in 1600×900 on Xbox One”.
All sources stress that work on the graphics drivers will continue up to and beyond the Xbox One’s release, so it’s not a done deal. For now, however, it’s reportedly a pain in the ***.
Microsoft has already spoken on the issue of performance differences between the Xbox One and the PS4, saying “the way people are calculating the differences between the two machines isn't completely accurate.”
There’s more detail through here, but it’s important to note that this latest information is direct from developers themselves who are used to actually working with the machines.
It should also be noted that, for the period following the PS3’s launch, similar accusations were made about that console, with Valve most famously saying it was “too complicated to develop for.”
The Xbox One launches in November 22nd.