Third alpha of mcopt.
- Fixes terrain lagging behind at the edge of your render distance in new land: in singleplayer, while new chunks are generating nearby, mcopt caps the frame rate at twice your display's refresh rate so world generation keeps up.
- Smoother frame pacing on displays that report frame timing: on a 120 Hz MacBook screen, nearly every refresh now shows a new frame.
- mcopt no longer adds its own fps counter. To keep the fps on screen, press F3 + F6, find fps in the list and set it to Always.
- The render thread no longer stops mid-frame to wait for the GPU.
- Less server work: faster point-of-interest searches, chunk ticking and chunk lookups.
Still alpha: expect bugs, and back up your worlds.