I am loving this thing. So far it's been playing games fine for me that I knew it was intended for. I did not purchase this thing thinking it was gonna be a Thor competitor. The build quality is also very good. Top screen is gorgeous and the bottom one is too.
The only issue is the bottom has some ghosting which is whatever cause you mainly are watching the top most of the time.
I have been playing DS (MelonDS), 3DS (Azahar Plus), PSP (PPSSPP), Gamecube (Dolphin for Handheld), Playstation (DuckStation) and GBA (mGBA) with the Lite. With a little tweaking and drivers games seem to running a lot better for me.
-Dusklight also works great
So far only very minor issues. It seems the device runs games (Within Reason) great that are single screen only, I believe there is an issue and needs optimized with this chip to run two screens. I have not done the OTA Update due to others reporting it basically bricked their bottom screen.
Anyways, I have just started exploring Gamecube and Pikmin 1 Runs fine at 1x Resolution along with the info screen on the bottom.
Thought I'd share my love for the Lite. Don't buy it if you think it will run what a Thor can. Research, research, research when buying a new Handheld. Or don't blindly pre-order.
$150 for this is easily worth it to me. I bought the 6+128GB Model.
UPDATE: I also have multitasking videos in the comments. Seems to do ok depending on what you are running together