insufficient performance while playing any 4K video

[lukand]

Could anyone explain the reason of the following phenomenon. At present I use the computer system equipped with Intel Core 2 Quad Q6700 2.66 GHz processor and 4 GB random access memory. The problem is that when I am trying to playback a file of 4K quality with SMPlayer 17.10.2 a video is not in line with a sound (delayed). To my surprise If I employ the VLC media player 2.2.6 Umbrella, the problem does not appear (both video and sound are played simultaneously without any delay). Furthermore, no matter if I run Windows XP or PCLinuxOS 17.07 the result is the same, i.e. the VLC media player 2.2.6 can cope with a 4K video without any problem whereas SMPLayer does not. Is it because of different resources management? If so, is it any chance to improve it in the next SMPlayer releases?

[rvm]

In preferences -> performance you'll find several options that can help to improve performance, like enabling hardware decoding or increasing the threads for decoding.

[lukand]

Thank you! I increased the number of threads from 1 to 2 and it solved the problem.