Actually alternating is one of my best sides as mouse only player, and I really don't think its impossible to keep up with hard songs. It is absolutely possible to even play the hardest maps mouse only, but of course it will take lots and lots of practice. The solution for not being able to keep up with fast songs was alternating for me, which I can do fairly good already imo. Downside is that my singletap speed is very low, because I never really train my singletap speed.KillerGecko wrote:
I too am a mouse user, and have 2000 dpi. Anyway, to the OP, it's hard to stay a mouse only player, because once you get to harder songs and have to do streams you will be unable to single tap fast enough to keep up. You can try to alternate between mouse buttons, but that makes things much harder. Most people use the keyboard to hit notes and mouse/tablet to move.
Speed can always be improved, but, of course there are limits.