Re: Texture rendering/graphics issue on PC
OK, first, running off your specs is less helpful than posting a dxdiag (as it tells us everything, not just the bits you think is relevant.)
Secondly... Could you post one or two screenshots HERE (preferably not sideways ones) and point out within those screenshots where the problem bits are? As those 'twist your head this way then that' screenshots you posted just looked like a bunch of pictures of boring walls to me. Or perhaps you could post a picture of what you think it is supposed to look like to compare to what you've got.
Upgrading to Windows 10 is just as likely to cause problems as fix them (the game was made for Windows 7/8).
Using an Nvidia card, GeForce experience should tell you what it believes are optimal settings for your game (saying that, I turn my graphics up higher than it says, mostly due to mods making that a necessity 😛 ).
You should also be aware that there are some mods out there that improve textures etc. It's possible the videos you watched were using one of these, hence the improved graphics. If you want help/information on modding, the best place to go is probably here, as that is where the tools were made.
(Just found this, if you go to the images tab and compare the 'before' pictures to the 'after' pictures, is that the sort of difference you were noticing? If so, think we found your 'problem').
