Originally Posted by daudi81
I also think I am a bit confused on what input lag even is? Will I notice a big delay between the time I press a button on the controller and that action being executed on the screen? Or is it more like latency where my ping will be high? If that's the case, if I only play single player games, I am good, right?
Yes, lag is the delay between when the signal hits the projector, and when it displays that on the screen. So yes, high lag means there's a delay between when you hit the button and when you see that action on the screen. So no, just because you play local/single player doesn't mean you're good.
For example, when playing Halo (campaign) for me there's a noticeable delay (on my RS4910) between when I move the stick and when I see it such that I usually will overshoot what I'm trying to aim at. And in Forza, cars are harder to control because the visual cues of slides and the like are all delayed.
Is this something a casual gamer is going to notice and get annoyed with, or are only the most hardcore / competitive players going to notice?
IMO the idea that lag only affects competitive/hardcore/online gamers is incorrect. I think it's more like RBE or motion issues, in that it's just that some people are more sensitive to it than others. I think it also has to do with what you're used to. For example my friend who doesn't play games on his own (definitely a casual gamer), noticed the lag on my JVC.
If it is going to be a problem, are there any other projectors that I should be looking at? Or would I be better off getting some cheap ($1k-ish) that has good enough picture quality, but low input lag - and wait around until something as good as the JVC lowers the input lag?
The best option, is if you've got a local dealer, take your console in and hook it up and give it a try and see for yourself. Aside from that, you could get the JVC and see how it goes, and if it doesn't work well you could get something like the BenQ W1070, which is quite inexpensive. Some people go with a Sony, but I don't think they have the PQ for the price they want.