Fast Symmetric Encryption Algorithms: My Options Basically, the question above...

I'm trying to implement encryption on the server, and I have another webserver that I can share a secret key with via TLS/SSL/HTTPS, so I do not really need asymmetric encryption.

There are many many different algorithms, but I'm looking for one that has balanced encryption and decryption performance since I'm gonna do both on the server...performance-wise, what are my options?

Thank you.
AES-GCM can be used as it provide Authenticated Encryption, no need to separately calculate MAC as the same same algorithm does that in parallel.This is hardware efficient.

For software you can use ChaCha(which is a Salsa variant stream cipher) along with Poly1305 , this combination also provide AEAD.