Lo-and-behold, with a 970 I can run TF2 at max settings in an MVM match and never drop below 160 FPS at 1080p. I'll take it.
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Fallout 4 max settings (except godrays, those are set to high), 1080p 2x DSR, 60fps normally unless I go up high. Almost all 4GB of vRAM gets used. Skyrim with mods at 1080p, looking far better than FO4, i7 4790K under a higher load than in FO4, GTX 970 pegged at 100%, 60fps indoors, around 30fps any where outdoors.