If anyone is having this ground glitch, copy these settings.

Graphics Quality: CUSTOM
Resolution Scale: under the M in custom, or all the way up (you may be able to adjust this depending on your pc)

World Tile Buffers - High
View Distance - Medium to epic
Anti-Aliasing - High
Post Processing - Low
General Shadows - Medium
Terrain Shadows - Medium
Textures - Medium to epic
Sky Quality is all the way off ( it is unnesesary)
Ground Clutter Density: Slider under the D in Ground
Ground Clutter Distance: Under the D in Ground

For the following check boxes starting with (High Quality Anisotropic Filtering) and Ending in (Low Quality Level Streaming)

The first 4 are Unchecked
Next 1 is Checked
Next 1 is Unchecked
Next 4 are Checked
Next 3 are Unchecked
Next 1 is Checked
Next 1 is Unchecked
Last 2 are Checked

Mesh Level of Detail: I have mine all the way up, but you could probably slide it down a bit, just not all the way down.

Client Network Bandwidth: set this depending on your personal internet speed.

Apply changes, then Save.

Now exit ark and restart the game.

Once back in game it should be fixed, at this point you can alter your settings accordingly for your what your computer can handle.

i have tryed all your solutions but it did not work, i have verified the ark files too, the textures load for the first 1-3 min then it just flickers and changes, some screenshots i uploaded http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=898081875
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=898143609
Hopefully there is a fix to this.

did you make sure to apply and save the changes and then completly shutdown ark and start it back up again? You may also need to restart your computer.

You could also try updating your graphics driver