we're observing throughput issues on international link (incoming traffic) to both networks 27.131.145.* at QSNCC as well as to 27.131.168.42-46 at TCCT.
I noticed that there is very high latency (more than 500ms) in MTR starting inside KIRZ.
It seems that there is a problem at KIRZ network that needs you immediate attention. See below high latency hops in red color (this is where the latency jumps from 230ms to 500!!!):