What package is the default for wifi configuration on Manjaro, and how is it configured?

Recently, I tried my luck at Arch after using Manjaro for a couple months. I instantly found that my internet speeds were slower with Arch, but worked fine on Manjaro. I was wondering if anybody knows how the internet is configured on Manjaro (stock settings please).

Pretty sure Manjaro uses NetworkManager and wpa_suppplicant for wifi configs.

There is no default config - but Network Manager using dhcp

The default software for managing networking is NetworkManager.
There are no Manjaro-specific configurations, so it’s using their default values which also Arch is doing.