Who plays an instrument and what are you learning/playing?

[Whispers]

Yeah, believing you're on time is common.??The thing is that although you want and you try to be on time your hands don't follow.??Sometimes your hands will be ready for the next note so they'll attack.??Other times it takes longer to reach to next note and you arrive a little too late not really being aware you are late.??Difficult rhythms also play a key factor.
Also, you should ask yourself which tempo you are following - the one you set or the ones your hands are following.??It is all too easy to minutely change your tempo to what your hands are doing when your aim is to do the exact opposite - to change your hands to the tempo you set.
Metronomes are completely unbiased.??No matter what happens with your hands the metronome won't compensate.??It just keeps ticking away.??

I could upload the failed "Fur Elise" vid for you.??It's not completed, and it's boring but meh.??