That’s because armor of higher level has higher Azerite power requirements than lower level armor. That means a shiny new piece of Epic gear will have better stats but, unless you’ve been diligent about your Azerite power grind, won’t have as many traits unlocked. You lose options as you earn better gear. Eventually, you’ll grind out enough Azerite to earn those traits back, but you’re left with limited customization until then.
Similar problems have risen in the leveling system, which automatically scales to the player’s level and equipment. For the most part, you’ll vaporize enemies more quickly as you gain power, but there are some weird dips. Many players complained they felt less powerful at level 119 than at level 110, a problem I experienced myself. And world PvP remains a strange and whacky world where level and class balance issues make wins and losses feel destined instead of earned.
-Warfronts- I liked the idea of warfronts because it blends elements of Warcraft III with World of Warcraft, however, it's not a PvP battleground or instance, it's PvE so given time, it's a guaranteed win so many people are starting to AFK in the warfront. Beyond that, there is only one warfront to participate in right now. Also, when preparing for a warfront, Blizzard presents you with daily quests to help "aid" the warfront, however, your daily quest turn ins have no bases on the progression of warfront. The warfront will continue to advance at the same rate no matter if you do zero quests or everyone does all the quests.
I've identified a pesky bug that had me confused for months now. I would get serious slowdowns (from 60fps to as low as 20fps) whenever the dugi waypoint arrow was active and I started moving across the map (especially quickly like flying on mounts/flying masters etc.). I tried everything, and all that could fix it was clicking "Remove all waypoints", so that the arrow turned off. I thought maybe the arrow needed to constantly update locations/routes, and a new game update had perhaps broken that feature a bit.
Get exalted reputation with every faction you can. This relates to the previous two pretty directly. Gaining reputation with most of the factions of Kul Tiras and Zandalar will allow them to sell you high-level gear, while gaining reputation with the Champions of Azeroth faction will grant you levels for your Heart of Azeroth, the neck piece where all of your AP is stored.
Dugi’s leveling guide is the leveling addon I’ve always used to level as fast as possible. It will show you where to go and what to do in-game, speeding up the leveling process. This is optional though, as the game already does a pretty good job at showing you where to go at all times. The addon does, however, come with a couple of other nice features and perks.