Are blueprint RPC params automatically net serialized (compressed)?

I’ve been learning about Blueprint RPC’s and C++ RPC’s and I would prefer to use blueprints initially. However, I know C++ RPC’s allow you to do custom net serialization to save bandwidth. I just wanna know if Blueprint RPC’s already compress the data automatically or if they dont at all.

https://forums.unrealengine.com/image/png;base64

Anymore information about this would be appreciated.

Thanks.

https://prnt.sc/u37fth