Hi! New Z83-4 user over here. I'm satisfied with this PC until the moment but I have a couple of issues to solve to make the experience perfect. I've experienced poor 4K video performance, I mean low frames per second... Impossible to watch. I am trying MKV videos but I suppose it would be the same with any format. At first I thought it was due to insufficient USB speed, but then I downloaded (www.4ksamples.com) videos to SSD with same performance. Similar results with VLC, SMPlayer and widows media player. Is my PC just not powerful enough or can I solve this problem? Thank you!