Patch 2.1.1 note has released in the official site. Here, the Community Manager Nevalistis explained some changes and adjustment on Realm of Trials, which make monsters more reasonable. At the same time, the monsters are designed to have variety to help you experience the Greater rifts as best as possible. By the way, we highly recommend you visit our D3 items on sale at this best site. If you are interested in the Real of Trial changes, just read the original post below:

"The Realm of Trials is designed to test your limits and, as accurately as possible, assess what level of Greater Rift you should be tackling. However, we also want there to be a small “safe zone” before reaching this limit, so completing the Realm of Trials should ideally land you a couple of tiers below your maximum capability. The Trials, up to this point, weren’t achieving this, so we’ve been working for some time to adjust them internally.

The adjustments to the Realm of Trials in Patch 2.1.1 had a few goals. First, we wanted to more consistently test your survivability. High damaging creatures weren't always spawning in each pack, which means your Toughness wasn't always being properly evaluated. Second, we wanted the Trials to feel less punishing for melee characters. And third, we wanted to mirror the monster variety you'd experience in a Greater Rift as best as possible. While the experience won't be identical, it should be reasonably close.

The changes to address these issues are as follows:

•We've adjusted how monsters will spawn during a trial. As part of this adjustment, we recategorized monsters into different “pools.” In the case of the Realm of Trials, a “pool” is a set of potential monster spawns that all have a specific theme. Different pools now include low hit point creatures that die quickly, slightly meatier “mid-ranged” enemies, tanky damage-soakers, and more consistent damage-dealers.)
•With this, we ensured that least one monster type from each “pool” spawns dependably.
•Monsters that run or kite frequently were removed from the spawn pools to improve the experience for melee players. To a lesser extent, this also lowers the need for players to have a “vortex” ability.

Finally, we realized that the reduction in keystone tier for multiplayer groups was too harsh. It’s intended that you receive a keystone lower than your theoretical maximum. The increased reduction for player groups helps counterbalance the higher capabilities of a group, especially when considering class diversity and buff sharing. We overshot that counterbalance initially, but this will be adjusted with an upcoming hotfix.

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