I am having the same issue. On a Nvidia GTX 690.
I found that for the issue shown in the first video (the jumping textures), can be fixed by turning off tesselation. The jumping textures also only seem to happen in close range to my character, and seems to happen in the same spots even if I reload the game.
The flickering textures on the other hand, seem to appear randomly. Can see flickering in one spot, restart the game and not see the flickering in the same spot. Doesn't matter what proximity to the character, can appear nearby or far in the distance on a mountain. Haven't found a graphics setting that fixes the flickering. There seems to be less flickering with ambient occlusion off, but it's not gone completely.
Both issues seem to only be happening on the terrain.
I was using the 344.65 driver but I see the 344.75 is now available now so I'll test that out. I'll post again if I find anything new with the latest driver.
