Hi guys I just got a 4k TV yesterday, and have been trying to play 4k video with the SP3. My resolution shows up as 2160x1440. When I start to play videos though, they seem to run choppy at 4k. Some videos play smooth, but most are very laggy. They play fine when I'm not connected to the TV. I just have an HDMI cable connected to a belkin display adapter going into the SP3. I'm on the i5/256gb/8gb ram model. Any tips? Thanks!