Which SMB?

SMBv1 has a reputation for being an extremely chatty protocol. Novell ipx/spx easily dwarfed it in the early days. Microsoft now disables it by default, but some utilities (curl) do not support more advanced versions.

SMBv2 increases efficiency by bundling multiple messages into a single transmission. It is clear text only.

SMBv3 supports optional encryption.

Apple dropped the Samba project from MacOS due to gplv3, and developed their own SMB implementation that is not used elsewhere AFAIK. If you don't care for Apple's implementation, then perhaps installing Samba is a better option.

NFSv3 relies solely on uid/gid mapping by default, while NFSv4 requires idmapd to run to avoid squashing. I sometimes use both at the same time.