Got my Costar delivered a couple of days ago. Downloaded various video apps like YouTube, CNN etc. The apps worked fine for about 30 mins after first downloading them, including streaming media from my local Plex server. Then, they all stopped playing back video. The videos run but just play audio. Its the same on all video apps I've downloaded. Netflix works fine however. I have force closed have tried clearing cache. No luck. I did a factory reset from menu and that corrected things after redownloading the apps....for about 30 mins, and the problem returned. I'm out of ideas on this one, can anyone help me out - I'd hate to have to send it back, everything else works perfectly Thanks in advance!