I have an e gpu set up with an rx480. I have run it on a few different screens and I recently acquired this tv Philips 55PFL5601/F7 55" 4K Ultra HD 2160p 60Hz LED Smart HDTV (4K x 2K) - Walmart.com.
Now I cannot pass 30hz in any resolution according to the radeon software past 1600x900. However if I go into additional settings it tells me the displays maximum refresh rate is 60 hz. I can't think of any settings on the tv that would hold up the refresh rate like that. Anyone have any idea?