ChaCha20-Poly1305 is faster than AES when implemented in software (i.e. where AES is not accelerated in hardware with e.g. AES-NI capable CPUs).
I think the GL iNet range of mini-routers are probably a good match for ChaCha20-Poly1305, but the bundled OpenVPN seems to be built using OpenSSL 1.0.2, which doesn’t support Cha Cha etc.
Would it be possible to build OpenVPN with OpenSSL 1.1.0 please, to enable such extra ciphers?