Questions about nif merge and texture filtering (two different questions)

[bigglebojiggle]

I'm going to start off with my biggest issue, using Nif Merge. I can successfully use the program to make custom npcs or edit existing npcs of nearly any race

Screenshot3922.bmp

Screenshot4393.bmp

but when it gets down to Redguards, all I ever get is this:

Screenshot1802.bmp

Is the some method to make a custom Redguard? Or is it just not possible?

 

My second issue is just about textures/texture filtering. I tend to notice a really ugly...shimmer I guess? On some textures. I thought it might just be my display, but then I though wait, if I can take a screenshot and still see it, it's the game or the graphic card right?

ScreenShot100.bmp

It can be a little hard to tell, but if you look at the right part of the screen, the snow has these ugly horizontal lines and kind of..checkered pattern to it. I find this the most extreme in Skyrim, but it's not always Skyrim that I see it. Other times, in other games, it looks more like a vsync issue and weird screen tearing or irregular framerate, but that doesn't appear to be the case as seen here. I don't know if there's an issue with my graphic card (GTX 1070 8gb) or what, but I haven't been able to figure it out.