I’m using Windows 10 with the latest BSNES Balanced core. I didn’t see any topics about this, so I thought I’d mention it.
Basically what happens is, when the game cuts to a black screen, the game freezes. I was able to use ‘rewind’ and it played normally after that. In Lost Vikings, it happened after the intro story (after starting a new game) cut to black. In Lost Vikings 2, it happened during the game intro. It doesn’t happen every single time.
I’m not sure if this problem exists on real hardware or not. I can make use bandicam to make a video of it if anyone is interested in seeing it, but I suspect the problem is reproduced easily enough.