Been tinkering with it some more and I’ve got some updates.

I can confirm that emulation runs smoothly when set to 50hz. The retroarch video setting was estimating 50.299 when it finally settled down to 50.105hz but it does tend to drift (.103 – .108). I’ve set the Refresh Rate to match. And now with VSYNC on, it runs smoothly. I’ve read this display has a 60hz refresh rate but using retroarch, this doesn’t seems to be the case. I haven’t noticed significant input latency and it must be fine, I was kicking ass (more than usual) in NES-Mike Tyson’s Punchout and NG-Baseball Stars 2.

As for the emulation-core locking up, it seems to be a power problem. I wasn’t getting the corner rainbow indicator so it didn’t occur to me at first that this might be an issue. I was using a 5v/2a power supply that came with my ASUS Nexus 7 tablet. I took an old Motorola charger and that seems to have done the trick. The core no longer locks up and runs continuously without issue.

So in closing, this display runs great for gaming. Just make sure you have a power supply that won’t buckle under the pressure of powering the display and the pi.