When do you chop yew fast in RuneScape?

I found that you chop yews fastest from level 70-99 (99 being the fastest). The best places to chop yews are the 3 yew trees east of varrok by earth alter. It is quite close to varrok east bank and there is usually empty, sometimes with 1 or 2 other players.. From level 60-70 the speed of chopping gradually increases, but its not as evident from level 60-69 as it is from 60-70. You can really feel the speed at which your getting yews at increase at level 70, and then it jet boosts at lvl 75.

I hope this answers your question.

I answered this question from a free-to-players perspective.