Regarding Rendering Ranger R2...
I have a repro of the game (obviously not a real cart - way too expensive) and it works inconsistently with the Super Nt. When firing it up initially, it always crashes after the title screen, but if you re-run the "run cart" option multiple times, eventually it will get into the game and play fine. Seems like some sort of DMA bug perhaps? It's very weird. It's also a strange one to comment on since I'm using a repro rather than a real cart. I'd assume the real cart has the same issue but I cannot say for sure.
The level "Touch Fuzzy, Get Dizzy" on Yoshi's Island would be a good comparison given the problem the SNES Classic had with that level.
Other than that please be sure to run Higan at it default settings (no vsync) so any timing differences between it and the real hardware are apparent.
Thanks!
The thing is - Higan's default timing sucks for actually playing. Both Higan and the Super Nt have their own methods for playing games at the correct refresh rate but neither is optimal for playing games, I've found. I'll show them, of course. You can disable v-sync on Super Nt just as on Higan to get the correct speed.
My primary goal here is to focus more on actual playability - getting the best experience on a standard flat panel display. The only way I've found to do that with Higan is D3D with exclusive fullscreen. You get occasional audio pops but completely fluid scrolling with no skips - which is the objective here. Who the heck would ever want to play a SNES game with screen tearing or skipped frames?
So those are basically two issues and it's good that both solutions offer perfectly accurate speed options for matching the original refresh rate - and it's better than they each offer a way to get around it and enjoy games with smooth performance.