>>418778071
> It's an issue of closed source and having to reinvent the wheel every time.
Retarded take. If you don't understand the code (aka cannot write it on your own easily), you are not going to get good performance. Period. 
>Because you have to start from scratch every time, down to implementing the VR. 
It's not how it works. YOU CANNOT THROW AWAY THE CYCLES, YOU IDIOT. This is the whole point. If it's like black magic for you, it's not going to work properly. There is nothing you can do about.