With the April 2016 update, mastery farming is made faster:
For HoT masteries do as many adventures that you can and try to get gold. If that's not your thing the spider farm is still good if you don't mind farming mobs. Open world events also yield more experience so do those if that's your preferred gameplay.
For Tyria: If you're able to run Fractals of the Mists find levels 21 or 40 (Swamp or the duo boss) and farm those with a group by looking for one in LFG/friends/guild. They're by far the quickest way to get experience.
Remember to run experience boosters from boosters and guild tonics. GL!!
Since making of the video, consider re-doing champions from hero points as they yield a nice chunk of experience and are farmable since it resets everyday along with reset time. This also applies to the adventures if you enjoy doing them.
Video explaining how to farm mastery experience more efficiently since masteries are a core part of GW2HoT end game. If you found this video helpful and would like to be updated of future GW2 videos made by me please subscribe and like the video!
Recorded with: Windows 10 DVR
Edited in: Adobe Premiere CC
Music: "Lurk in the Dark" - Noragami OST
Watch video Guild Wars 2 Heart of Thorns Mastery Farming Tips!!! online, duration hours minute second in high quality that is uploaded to the channel Finales Funkeln 07 November 2015. Share the link to the video on social media so that your subscribers and friends will also watch this video. This video clip has been viewed 5,560 times and liked it 41 visitors.