I did a little more looking around and found mention of beta firmware images with kernel 5.4, starting at reply 28: GL-AXT1800 (Slate AX): Wireguard client connect error (REKEY TIMEOUT) - #28 by alzhao
I did a little more looking around and found mention of beta firmware images with kernel 5.4, starting at reply 28: GL-AXT1800 (Slate AX): Wireguard client connect error (REKEY TIMEOUT) - #28 by alzhao