With the release of Nvidia's new 359.06 drivers yesterday, there appears to be working support for SLI in Fallout 4! Rejoice! The performance on the high end wasn't really noticeable, but on the low end with all settings enabled, on Ultra, TAA, 16x ASF at 1440p, an area that I was getting as low as 34 FPS in now gets about 57 FPS (2 980 Ti's here).

Bump.