Been wondering this, or something like this.

I used to be good at Mario 1, but I cannot play it on emulators. It feels like there’s a delay. It feels a little like Mario is on ice, much like the ice levels of Mario 2. Mario is running, and I want to jump or stop, but there’s a noticeable delay and it makes me feel like my old ass has lost my touch. But playing any modern game, my reflexes are good enough. In a Nintendo to Nintendo comparison, I play Animal Crossing on the Switch, and sure enough, if I’m running and pull back on the stick, my villager skids at exactly the time I want them to. But on that same Switch with the same controller, I can’t control Mario in Mario 1 worth a damn. I do just fine in Super Mario Wonder, though.

(Side note, more to do with Animal Crossing than older games, but I’ve noticed a wired controller, plugged into the Switch dock via USB, with the Switch on the dock, gets more latency than the Switch in handheld mode, which I’m pretty sure uses Bluetooth to connect to its controllers, even if they’re physically connected — not 100% sure on that. But for one example, fishing — even the five-star rarity fish — is quite easy in handheld. But, with the wired connection, I mash A as soon as the fish bites, and it still slips my hook. Maybe the latency isn’t from the controller to the dock to the Switch, maybe it’s from the Switch to the dock to the TV (and speakers since I close my eyes and listen for the sound, which most animal crossers agree is the best way to fish).)