Have you looked at the BPI-R4? It's a pricier option than the OpenWRT One, but it has excellent hw acceleration for networking tasks. I am 90% sure I recall someone reporting using it for a 2.5Gbps PPPoE connection and it handled it. It's also supported by the OpenMPTCProuter project if you need network aggregation support.
I feel like HN needs to have a small model that compares post title to the article content and assigns it an accuracy score.