This is all about balance, you can't be good in evrything.
If you choose 1h shield then it's a defensive class, you can't be as fast and do same damage that a 2h/pole.
Ofc 1handers are slower than 2h/pole, that's not silly, it's balanced.
Why ppl want their class to be OP in everything, you have to make choice.
You should try to play as a 2hander and you will see how it's difficult.
1handers need timing and footwork, btw Vibe, it requires less skill to play but it require more skill to be efficient and top scoreboard.
I can understand that it's painful and frustrating, as you see that guy with his big sword killing ppl superfast in one hit, and you with your little sword you need 3 or 4 hit (plus bounce) and you are slow as hell.
Well you have to learn to play in a team, help others by blocking incoming hit to let your teammate kill your opponent, or strike at the good moment for full effect.
(Btw, my main is a 1hander)