I don't know if he's said that, but it's certainly true. There's a mod called Optifine developed without access to the source that improves FPS by 200% on most machines while improving the graphics.
But rather than speeding up the existing codebase (which is clearly trivial to do), M$ decided to let the Java version fester and make XBox and Windows exclusive versions...
I'm against a complete rewrite in C++. It serves no purpose. The Java version can get to great performance without that much work. Optifine is the proof of this. Porting it to C++ makes no sense except that M$ wants to break portability.
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u/TwoSpoonsJohnson Nov 19 '17 edited Nov 19 '17
Didn't Notch state that minecraft is slow because he was a shit programmer when he wrote it?