Low-latency applications (cloud-gaming, cloud-robotics, metaverse...) have soared with the rapid evolution of Internet. Current network capacities (especially time-varying capacity networks like 4G/5G networks) struggle to ensure user QoE (Quality of Experience). There is therefore a need to collect, identify and analyze metrics specific to low-latency applications in network equipment (switches, base stations, UEs...) for efficient troubleshooting of user QoE degradation purposes.