thx for your answer.
as i know about my friend equipment, he doesn't use any external sound device at all except laptop speaker and headsets.
i think i have to go to my friend and check some settings in person
my friend set the all but he said to me the sound is cracked even he set the sound to "2 channels, 16 bits, 44100Hz".
is there any better ways for solving this problem?
Valkyrie mode was successful with dll, xml modification, but the internal output frame is estimated to be 60 fps (animation, etc. is 2x slower than normal)
also the note speed is regular, but it is also show to 60fps.
is there any solution about this problem?
the main screen is set to 120fps, and sub screen is 60fps