I am having some issues with my HTPC which is a Intel i5 NUC. It has Kodi embedded with Libreelec and Plex add on. I have my home synology server with a couple of 4k movies. Those movies play fine. The issue i am having is when i connect to another server that has 4k and outside my network. I have 300mb download speeds and shouldn't have an issue with streaming but when I play those movies get jerky video and it doesn't syn with the audio.
I am newbie to all this so whatever help you can give me would be great.