Suppose there's the after support that comes with that AVS product. Eurogamer showed the Japanese Famicom variant of the mini-NES. http://www.eurogamer.net/articles/2016- ... assic-mini Not sure if the demo video is playing off the final product, but if it is then they've kept the slowdown and sprite limit from the original hardware.
There's the overclock option in FCEUX, which makes this little unit seem...bleh.
Wonder if these changes can be applied to that AVS. Anywho it would have been great if Nintendo optimised the games while they were making it.