When I have my scene view (Editor) camera too close to my meshes, it looks like the part of the meshes near the fringe are getting clipped. Sometimes at different viewing angles their material looks different.
This happens in both the scene view and the game view irrespective of whether the scene is played or not.
Does it have to do with the scale of my mesh? or the frustum of scene view camera?
The texture problem could be related to the mip mapping settings of your texture you can change this when you import your textures into Unity.
The camera problem might be related to possible the field of view tab in the camera settings within the inspector menu or could be the clipping planes or the normalized viewport options within the same menu.
Try playing around with these values and see what happens.