This new series of Epson projectors are as good or better for gaming than any previous models. Input lag, using my Leo Bodnar input lag measurement device) shows input lag to be approximately 29.3 milliseconds. That's rather good, and enough to satisfy all but the most hard core high speed gamers.
Of course ideal is 0, but this number indicates that with 30fps content, the Epson's projected image is a touch less than 1 frame behind real time, or almost 2 frames behind with 60 fps content.
We consider 50ms to be just acceptable. Few projectors other than those targeting the gaming market, do better than the 30ms range, and most of those are around 16 (1 frame back on 60 fps content. If you you are a serious gamer and haven't sprung for a high performance PC and an expensive gaming monitor, this Epson will probably serve you just fine.
In the past, Epson's menu choice for Fast / Fine, was critical for lower input lag, but not with this model. Fast reduces the color palette to 8 bit max (truth is, even Blu-ray content, capable of 10 bit, is almost always 8 bit). A more practical aspect since it no longer affects input lag, is that Picture in Picture will not work in Fast mode.