Ater PS, I assume ?
You got to check the indicator “Ater congestion time” or “Ater load”, something like this, located in the object “Ater” or “GCH”. I’ve been out of ALU for the past 1.5yr now, so I kinda forgot the exact names 🙂
The idea is to see how much time the amount of GCH busy are equal to the max capcity of the Ater GCH.
Also, check the GSL load, but usually it doesn’t congest, so it’s almost never an issue.