Screenshots were taken at 5x5 1080p tiles, making the full resolution 9600x5400 with 16Q CSAA. These were then downscaled to between 2K and 4K resolution, depending on how I cropped the shot cropped from 16:9.
Many textures are vastly enhanced by the “Mass Effect 1 Updated/Improved Textures Mod”. On the downside, in order to make tiled screenshots work it is vital to disable the games vignette effect. This can only be done by disabling allpost-processing effects, which includes a number of lighting ones.