Semi-mmo (rpg) Netcode: WCF or GRPC

[maskedmelon]

trying to decide a direction to go for building the client-server communication interface system (netcode?), and have been tiptoeing into related information, but thought I'd solicit some opinions. Any thoughts on which of these would work better, or if i should just make my own thing with liek binaryformatters and UDP or something? My experience is super limited and I know next to NOTHING, so any/all feedback is appreciated and feel free to ridicule me!

also, im using c# and while i would prefer a c# amenable solution, im not opposed to learning another language if it would work much better or be simpler or otherwise offer a robust set of advantages of c#.