Sorry SE, but endgame won't work if you don't fix something.

[Khalette]

...

On a core, fundamental level, World of Warcraft works. If you push an attack, that attack happens. If you run to a spot to avoid an AOE, you avoid that AOE. If a boss starts casting a spell and you press an interrupt, that interrupt happens instantly and successfully every time. WoW has a fluidity and responsiveness that a many recent high-profile games simply lack.

...If your WoW-like game feels sluggish and laggy compared to WoW, then you need to start over. You don't release a game with a similar monthly fee while offering what is clearly mechanically inferior to WoW. The final kicker is ARR even managed to have a terrible tab-target system, too! How do you even mess up tab-target? How?!? SE knows, apparently.

I agree with this whole-heartedly.