That is actual for old versions of the game. I completed free demo version with stick, that was easy. But newest version slightly reworked balance and some enemies have way shorter cooldown after. These plat-mans (or who are they) not just fast but also TOO fast to be beaten by stick.
But I find it good somehow. Since I felt this attack speed issue I had to use firearms and found out that when their heads are open they receive A LOT of damage. Plus I'm glad firearms became more useful.