I am new user, trying the demo on PC, for bass.
Asus M5A97 board Evo R2.0
GTX 560Ti OC.
So PC should be fast enough, but was experiencing LOTS of lag that made game almost unplayable.
I did edit the .ini file as suggested on forum, tweaking buffers etc, but still lots of lag.
Ie about 1/3 of second after I play the note, I hear it. Got the same result in Audacity etc.
So did more searching and found this tool:
This tool showed me that for some strange reason, my NIC driver "Realtek PCE GBE Family Controller" was introducing lag into the system.
As soon as I disable my NIC driver (yes not very convenient to do this all the time) in device manager, the lag virtually disappeared in RS!
This explains why, even after tweaking all the RS settings, that it is terrible for some, great for others.
Hope this helps someone here. I'm still on fence whether to get full game.. :-/