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Not helpful to you except as an existence proof, but you can install Retropie on a Raspberry Pi and it will play SNES ROMs fine. I believe the emulator is a variant of SNES9x.

retropie runs fine on some arm platforms. you can also use lakka. However the latest retroarch is 1.8.5, while the 1.3.6 version is from 2016, I would imagine nothing would work on Stretch, so I recommend an upgrade or any OS that isn't debian. If in doubt, gentoo always works, though its source based.

https://retropie.org.uk/ http://www.lakka.tv/

I've been running it on a Fire stick 4k but in 32 bit mode