Does anyone else have playback issues when using GOMplayer for 4k playback. For instance I played the same 4k mkv files in vlc player and gom player and each video has audio/video syncing issues only in Gomplayer. The audio plays normally but the video is slower. Just wondering what the issue is and what I can do to fix it. I paid $15 for the gom player plus which is supposed to support 4k playback without issues.