Can TiDB Lightning be used with 1-Gigabit network card?

TiDB Lightning is best used with a 10-Gigabit network card.

1-Gigabit network cards can only provide a total bandwidth of 120 MB/s, which has to be shared among all target TiKV stores. TiDB Lightning can easily saturate all bandwidth of the 1-Gigabit network in physical import mode and bring down the cluster because PD is unable to be contacted anymore.