Currently, with the 50% buff we are getting a 1.5 increase in the speed of leveling. However with the incoming xp nerf, levels from 40 to 60 are getting a 50%-75% reduction in xp requirements per level. This is equal to a 2-4 times increase in leveling speed, much much faster than the current 1.5 increase with the buff.
Tldr, if you value speed leveling/efficiency, level to 40-42 and wait for the chromie time/xp nerf that comes at the 15th of November.
I’m going to wait 5 years for a 85% decrease in XP.
Dunno. I mean with Winds of Wisdom + Hallows End + Timewalking this next reset, leveling should be pretty amped up for a week.
Even with all of this, I will wait until Prepatch for levels 50-60 for one simple reason: being able to level in any zone outside Shadowlands thanks to Chrome Time. I don’t even care about the speed, I want to leave Shadowlands zones for good.
I am going to wait 8 years for levels to be deleted!
Cataclysm timewalking is somewhat good? I remember many of the dungeons being kinda pita. Or why do you think its good for lvling?
Very useful 
thanks.
Although I’m dead bored now and I don’t care how long it takes, I’m levelling the normal way.
Thanks for the tip.
In the process of leveling a Paladin and really not enjoying it. (But I like Paladin mogs, so gonna level it anyway). I hope the class gets less dumb at max level, but right now it just feels awkward to play. And that is from someone who mostly plays a MM Hunter. So will do what you suggest.
TBC until the dungeon’s quests are done or til you end up with the long boring ones lol then swap to Wrath. It’s what I do. Cata dungeons are too long and boring imo. and can’t do classic again.
Absolutely this
It’s alright, but I still believe Draenor/Legion questing, especially if you party sync with a second account is the fastest. Just with the 50% buff I’m able to level from 10 to 50 with my route in around 4 to 5 hours depending on class and how much time I spend alt tabbed.
I think 40-50 is totally fine even now.
For 50-60, definitely wait instead of having to suffer through Shadowlands.
It’ll take them 8 to ‘delete’ factions.
I will wait 5 years for WoW servers to be taken down.
I have everything leveled up nothing to level anymore. 
Oh yes, it’s definitely fine, I never said it isn’t. Just stating that it’s going to be even faster when the xp nerf happens 
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Had the same problem, which is why I finally decided to get a second account :P. By the rhythm that I’m leveling, I’ll soon need a third one 
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Doesn’t the xp nerf come October 25th? It’s just joyous journies that’s going away on the 15th of November.
Which means the best time to level is after pre patch but before evokers.
From what I heard the exp nerf only comes in with the Evokers sadly. Same with Chromie time working 50-60.
Huh?! That’s ridiculous! What’s the point of the pre patch until evokers then? Surely all the backend stuff comes with the talents.
Hoping this isn’t true.
I know, I was disappointed as well. But as far as I know phase 1 is just the new talents + UI.