In Path of Exile, if there's one resource people who play a lot but easy to ignore, the answer is time. Whatever else you can put up some PoE Currency for trade, there are 24 hours in a day that you get to make use of stuff, including playing the game. Many of these players who are serious about the game don't think about it as much as others, as they've dedicated their time and energy into playing the game, but they also have to sleep and do daily life things.
Therefore, it is crucial to be able to experience as much of the game in as short of a time as possible. That includes farming and grinding PoE Items very quickly, that's quite an important part of the game. Being able to clear areas in the game that make out the most amount of experience and poe items are not too difficult, the major part of that process is the builds and skills that go into doing what you want to do.
Do take note before you pay attention to clear speed, first you must understand that the main aspect of gameplay is survival. You have to take care of your character's survivability first, especially if you're playing in a hardcore league. Even in standard league dying is a waste of time, so you need to make preparation on health, energy shield, and/or defense first. If you are going with a build that guarantees survivability, in order not to have your character be squishy and make sure you follow what's necessary.
Being able to clear areas fast means being able to kill as many enemies as possible. That means you need to hit multiple enemies at once, whether it's splash, area-of-effect, or just something with a sweeping arc or linear penetration. There are quite a few skills like that, like Earthquake, Ice Nova, and CoC Discharge. These particular skills don't require aiming, as long as you can deliver enough damage, just casting them can kill everything in front of you.
More information please check:https://www.mmogah.com/news/poe/how-to-make-fast-clearing-in-path-of-exile