I will never understand how good infection players get melee kills on zombies. I was decent and had a good connection. I won most games with high multis but every fucking time I melee a zombie, even if I swing first , I die. Every time.
Good player with good WiFi I was good enough to either sword block or get the melee kill half the time but whenever I played at my friends house who had bad wifi I just had to rely on hitting my shots before the got to me