[2020] High internet usage

Trackmania consumes about 60-120kB/s on a server with a population of about 10 players, that's up to 0,3GB/h, as somone with limited volume, (60GB/Month) makes it dificult to play the game while having enough internet for everything else.
Other trackmania's never consumed that much, not even close to it.

I already disabled downloading but still consumes this much data, why?