I bought a ryzen 5 3500u laptop last day. It played 8k video with lot of stucks while it played well on i3.
Is there something that i have to do to improve its peformance like updates..
You didn't specify the exact I3, but the most recent Intel cpus use UHD 630: https://en.wikichip.org/wiki/intel/uhd_graphics/630
There's 16k next to JPEG/MJPEG, and that's it. Nothing about Intel's supporting 8k either...