[Make-wifi-fast] 3g/4g with fq_codel & mobility

[Loganaden Velvindron]

Hi folks,

I have one of those gl.inet 6416a board. It runs fq_codel on the
USB-3g dongle modem interface, and it runs very well at rest.

I put it inside a car, and while driving, I notice some induced latency:

https://www.dslreports.com/speedtest/6354936

Can someone who has some understanding of 3g/4g internals shed some
light ? Could the 3g/4g modem be buffering due to varying strength of
the signal or due to handover in base station ?