Thanks guys. My TV is like 6 years old at least so a little harder to find good info on. Although after doing some searching those older Samsung LCD 720p sets are supposed to be pretty decent with input lag, especially with the "game" setting (which I use).
Since I am getting a larger TV for my new place soon though I will check that guy's site out for a good option with less lag.
In the meantime, I might chalk it up to a combination of arcade stick buttons that don't feel super responsive (they feel kind of loose without a solid snap back), lack of practice with the stick (even though stick motions are fine), and a bit of input lag. Maybe I'll just practice more. In the past couple years I've done more combo practice on the 3DS than the 360 (my wife hates the sound of arcade stick buttons), so I might just be used to slightly different timing.
I definitely don't "feel" the lag. I feel like when I hit LP or whatever it flies right out.
But when configure Rock Band for input lag it definitely calibrates as if there is some lag.
Crazy what a couple dozen milliseconds can do.
how do you guys input your DP?
I discovered a new method (well new for me) where you just put the stick on forward then slide it down to down forward then slide it back to forward....
I did not know that worked... I always had it on forward then put it on down then down forward and I was always messing up lol.
I think I'm doing F->D->DF but I think it comes out more like your new method. Whatever it is, it works.
I think you can also double-tap down-forward.
SFIV is pretty loose with stick inputs. Occasionally (but rarely) I'll try to do a super/ultra 2X QCF and a DP comes out.