hi VH members , i just got a OPPO 203 about a month ago and i have got some 4K video demos from Youtube. Interestingly i found that if i use the H.264 4K demo it runs smooth but if i use the VP9 4K demo of the same video it stutters. The audio is ok but the video has problems

does anyone know whats happening here and maybe some tips to rectify it ?

chat soon