Most of my videos are now HEVC x265 and play great on my FireTV 2 with direct play. However, whenever I play them using the Windows Store App, I notice that it will play fine starting out, the video will freeze while audio still plays then the video speeds up until it catches up to the audio. Anything that is x264 plays without issue and if I transcode, it plays fine as well. I have reinstalled the PLEX app and have even at one point reinstalled Windows 10 (for other reasons) and the issue persists. These same videos play just fine using MPC. Any suggestions to resolve would be greatly appreciated.
AMD 8350 OC'd @ 4.7 GHz
MSI GTX 970