No issue so far. Absolutely flawless.
But then again, my usage pattern is turn on, play game (or media), turn off. Roughly 2-4 hrs total on time per day.
Haven't tried all my steam library games, though, as I'm currently playing gta v.
My rig: custom desktop on i5-4440, 2x 8gb value ram, 240gb kingston ssd, 1tb seagate hdd, zotac gtx 970