This is what a PUMA6 intel chipset modem does to your latency, This causes jitter in games voice chat and virtual meetings. This is a major issue to quality of service. Using
Netgear confirms: Intel's wobbly Puma 6 in fast broadband modems is super-easy to choke out • The Register
Did the Puma 6 & 7 latency bug ever get fixed? : r/VirginMedia
FRITZ!Box 6591 Cable HX Puma bug | ComputerBase Forum