Okay, so I joined a world, my render settings are set to render distance 32 chunks, the game loads the nearby chunks incredibly slow. Just take a look at the picture below. The chunk didn't even load for the next 3-5 minutes.

CPU:Intel core 2 quad cpu Q6600 2.4 Ghz 2.39 Ghz
Graphics Card: Nvidia Geforce Gt 630
Ram: 8 gb
Windows: 64-bit version 1703
Os Build: 15063.540

Im pretty sure its a bug, Hope it gets fixed soon.