Very strange problem

I've got libreelec running on a braswell chipset nuc all running perfect till just now watched a YouTube video went to play another and it would only load the first second and play it over and over (imagine a really bad stutter) first thing I though was a network issue, I'm connected over Ethernet I restarted router checked the Internet on my phone all is good but still have the same problem on my htpc. The very strange thing to me is it even does this with files I've already got downloaded on my hard drive, do any of you geniuses have some ideas I could try to sort this out