The graphical level seems similar to ArmA (Armed Assault) from 2006 or so (imagine there being grass rendered as it should). That game engine was tweaked to be seen from grass level, not from the air.
Think about how crappy things always look in flight sims as soon as you lose some altitude. A lot of this detail will not be visible for the most part when we fly in SoW - but for once(!) the ground detail will be retained or even get better as we fly lower. If your computer can handle it
If anything will make me buy a new graphics card, this will be it.