Aggro Ranges Broken :DMN era

Era player and have been for some time. I play on a dead server (faerlina) with no auction house, but a vibrant community of player that are trying to progress.

We used to be able to go into DMN for tribute run with little to no problems, but within the last 2 weeks or so, mobs aggro from unreasonable ranges particularly on the Z axis.

We used to have a hunter that would solo this no problem less than a month ago. I don’t know what changed, or how it changed, but something is messed up. It would be nice to know WTF is going on