Major Major Render Issue

Ok, so my render distance is on 6 for less lag, as usual, when I decide to turn up to 10 render distance (I can handle it.) I leave the pause menu and the MOST ALL of the chunks just flicker and show weird stuff. Not really any way to explain that besides showing you guys my screenshot. Upon going below 8 (so 7 or lower) the rendering returns to normal. It just flickers like crazy. Shows random stuff. Like what the heck there's not a ravine there!

Edit: BTW 3 of the 4 pics are in rapid succesion. Rapid Paparazi of the event. That shows you how fast it flickers.