I've had mine since Friday. I switched all animations to .5 and switched from Davlik to ART and I can't notice any lag whatsoever. I'm also not a lag Nazi, so I'm not looking for it, but I am coming from a very smooth HTC One M7 and I feel that this device is just as smooth, perhaps even a tad snappier. I for SURE wouldn't let lag be the reason you don't get it. There are other reasons based on how you use the phone, but I don't think lag is a concern.