[ale42]

0.4 what latency? 0.4 s or 0.4 ms, or something else? Because if it's 0.4 ms, that seems to be very local, and possibly even impossible on LTE because of network latency. I'm not even sure 5G manages to get under 1 ms of latency.

[elevation]

I had the same thought: the device OP used for LTE testing may have been still connected to a local link and was routing packets over that instead.