Video lags with every player without vlc

Nov 28, 2013
2
0
10,510
whenever i start a video with km player or any other player without vlc video lags but audio is ok, even my pc is getting very slow
in all other players this problem occurs but only in VLC player everything is ok
till yesterday everything was fine but suddenly from today videos with any players without vlc videos struggling
what is the problem?
may be there is no problem with hit or video card cause i am playing many games like fifa 15 very smoothly

plz help