Yeah, hes clearly not experienced here. Hes having trouble understanding how the bandwidth is effected by processing frequency. Its not something thats easy to teach in a forum post. Especially without being condescending. Im trying to think of a way to paint a picture, but everything I come up with ends up with me seeming like Im talking down to the guy. And he refuses to Google this or read any links so its like … okay.
This is Blizzard directly telling the players all spell casts are being moved to a low priority loop for them to be PROCESSED AT THE FREQUENCY of Vanilla. Processed is the key word there. As is being aware of WoW’s code well enough to know that 90% of everything in the game is a “spell” with a set SpellID. Anyone who has run a Mangos server to fool around as a GM can tell you that. By putting 90% of all load processing (spells) on a lower tickrate the servers remaining load is absolutely miniscule with only minor things like Player Location being updated at current rates. This frees enormous amounts of resources.