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That feel when you (kind of) master the inputs for hadoken and dragon punch on keyboard.
(hexbear.net)
Been playing around with a mugen build of Street Fighter 2 (https://gamebanana.com/mods/382248) that has all the characters from the turbo and champion edition.
I can see why people like the hitbox controller, it's how I laid my keyboard out.
Just tried it out and it looks like it doesn't work on 2, but I'll keep that in mind for 4.
There's an additional layer of jank on keyboard that also might come up, depending on your keyboard: key roll over
My kb is 10 key rollover I believe