Comparison of different graphic settings in few in-game locations.
Disclaimer
All screenshots were taken without restarting the game, so textures on low settings might be a bit worse in practice.
Forest, Morning, Clear
Ultra:
High:
Medium:
Low:




Jungle lake, Afternoon, Heavy rain
Ultra:
High:
Medium:
Low:




Autumn Forest, Afternoon, Cloudy
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Mountain base, Morning, Heavy snow
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Canyon, Noon, Clear
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Mountain river, Afternoon, Heaby snow
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Island base, Afternoon, Clear
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Desert oasis, Noon, Clear
Ultra:
High:
Medium:
Low:




Mountain river, Noon, Clear
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Autumn forest, Afternoon, Light rain
Ultra:

High:

Medium:

Low:

High:

Medium:

Low:

Thanks to Ragvard Grimclaw for his great guide, all credit to his effort. you can also read the original guide from Steam Community. Enjoy the game.