Cannot play high resolution vedio. LAGGINGG.

[joelarukakkan]

I know Smplayer. Its really light. But light for me only when I play low resolution videos. I am using the 64 bit version of it V14.9.0. There is no synching and the audio sometimes keeps repeating itself due to video lag. I tried this on many other PC's and I am sure its not about the power of the PC. Also I found that I cannot seek through the timeline when I play some videos. I have used SM player for a long time and these things seem to be happening only now. Please help me.