Apologize for the necro and upcoming wall of text, but I think there were some good points brought up here and I would also like to bring this feedback thread into attention again. After running almost daily 1-2 runs for past few few weeks, one of the most aggravating key mechanics that truly stand out are the RNG portals in map 1.
Based on our party experience, we are seeing 10-15 tries in map 1 to RNG to the next phase (which generally takes up easily 9 to 15 minutes of the allocated 20 minutes for full rewards (30 for halved) time period) to to proceed to map 2 which happens on average to at least 1 to 2 person every 2-4 runs. This has resulted in the previous strategy of kicking party members that are stuck due to something out of their control so that the other party members can proceed.
Even if say they do manage to finally get past say on the 10th attempt, mobs may have wandered or possibly respawned? (behaviour cannot be confirmed) in previously cleared regions resulting in further delays to said player. For instance, in a recent run one of our party members that took 15 tries to get past phase 1 got ambushed in a region that was cleared earlier.
Perhaps there are some key mechanics that we are missing but we certainly are unable to figure it out after so many runs. We tried going into different portals which do not appear to help with proceeding to the next phase, and going into portals together don't necessary mean players are warped to the same spot together (support players may be separated from dps players while navigating thru the maze). Personally I do not understand why RNG is one of the core instance mechanic that can determine the success or failure of the run with no real way to mitigate/strategize against (as far as I can tell) other than getting lucky I suppose.
The instance itself is vibrant and does has some nice themes and interesting mechanics, but RNG certainly does not add to it. I do hope that other players can chip in their experiences and perhaps the GMs can also provide some explanations on the feedback as well.