When I change my Render Distance (as shown in the crash log below) it fails to render the land properly, and it renders differently (can't really explain it, except with screenshots) depending on the players angle.
Furthermore, when I click Save and Quit To Title, it just stops responding, which I am guessing is explained by how Minecraft "Can't Keep Up" in the crash log. After restarting Minecraft, the old world loads successfully, but rendering chunks is very slow. The last screenshot (bug3) shows the issue. I will also show the Advanced Settings that I used when generating the world.
Furthermore, the "downloading Terrain" takes significantly longer than usual (Over 2 minutes when generating new worlds!) My System specs are also below:
CPU : AMD FX 4100 Quad Core 3.6GHz
GPU: XFX AMD Radeon HD7850 2GB
RAM: 8GB Crucial RAM
Hard Drive: 1TB Hitatchi (750GB Free)
Motherboard: ASRock 960GM/U3S3 FX

[16:41:18] [Client thread/INFO]: [CHAT] Your game mode has been updated
[16:41:51] [Server thread/INFO]: Madmikegamerxl1 has just earned the achievement [Taking Inventory]
[16:41:51] [Client thread/INFO]: [CHAT] Madmikegamerxl1 has just earned the achievement [Taking Inventory]
[16:42:51] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:damage.thorns
[16:42:51] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:damage.thorns
[16:42:53] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:damage.thorns
[16:42:54] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:damage.thorns
[16:43:16] [Server thread/INFO]: Saving and pausing game...
[16:43:16] [Server thread/INFO]: Saving chunks for level 'New World'/Overworld
[16:43:16] [Server thread/INFO]: Saving chunks for level 'New World'/Nether
[16:43:16] [Server thread/INFO]: Saving chunks for level 'New World'/The End
[16:43:46] [Server thread/INFO]: Changing view distance to 32, from 4
[16:44:46] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 59935ms behind, skipping 1198 tick(s)
[16:44:46] [Server thread/INFO]: Saving and pausing game...
[16:44:46] [Server thread/INFO]: Saving chunks for level 'New World'/Overworld